Statistics question and answers for October 16, 2023
- Q Frequency 10 8 2 1 6 11 16 21 26 data Q Based on the histogram above what is the frequency of the class containing the value 22 Question Help...
- Q Frequency 10 8 6 A 2 11 16 21 26 31 date Based on the histogram above what is the class width Class width 1 6 What is the sample...
- Q The kicker for San Francisco Phil Dawson is lined up on the 35 yard line waiting to punt the ball on fourth and long to the opposite side of the...
- Q Use the following table of data to select the answer A market research study on motorcycles contains the following data for sales of motorcycles at various prices over the past...
- Q Homework 4 4 Score 0 8 0 8 answered Question 4 The owner of a small deli is trying to decide whether to discontinue selling magazines He suspects that only...
- Q Question 3 T A recent study surveyed 1 358 households asking if the residents rented or owned and if the residents included dependents The results are summarized below 1 or...
- Q Question 5 A CBS News poll conducted January 5 2017 among a nationwide random sample of 906 adults asked those adults about their party affiliation Democrat Republican or none and...
- Q Question 8 About 2 of the population has a particular genetic mutation 100 people are randomly selected Find the standard deviation for the number of people with the genetic mutation...
- Q Question 12 6 6 28 4 38 5 72 15 Researchers watched groups of dolphins off the coast of Ireland in 1998 to determine what activities the dolphins partake in...
- Q Homework 4 4 Score 0 8 0 8 answered Question 2 Assume that a procedure yields a binomial distribution with a trial repeated n find the probability of k 3...
- Q Homework 4 4 Score 0 8 0 8 answered Question 5 Y Matching questions ask you to match each question on the left with one of the choices on the...
- Q Homework 4 4 Score 0 8 0 8 answered Question 6 At a university 18 of students smoke a Calculate the expected number of smokers in a random sample of...
- Q Fill in the blank with an appropriate word or phrase If a sample is drawn in such a way that each time an item is selected each item in the...
- Q 19 A psychologist from Austin Texas interested in sleep s effect on the ability to learn randomly selects high school students from the area s local high schools Half the...
- Q 16 An experimenter believes that two new exercise programs are more effective than any current exercise routines and wishes to compare the effectiveness of these two new exercise programs on...
- Q 18 Since many individuals walk around their homes in their socks a manufacturer has created a material for socks that is believed to be more resistant to wear than cotton...
- Q 10 In a certain community 20 of cable subscribers also subscribe to the company s broadband service for their Internet connection You would like to design a simulation to estimate...
- Q 15 Which of the following is a true statement about experimental design A Replication is a key component in experimental design Thus an experiment needs to be conducted on repeated...
- Q 14 In a game of chance three fair coins are tossed simultaneously If all three coins show heads then the player wins 15 If all three coins show tails then...
- Q 9 A newlywed couple is trying to choose one of two neighborhood supermarkets for their grocery shopping They decide to randomly select 20 items check their price at each store...
- Q 11 The number of T shirts a school store sells monthly has the following probability distribution of T shirts X 0 1 2 3 4 5 6 7 8 9...
- Q 20 Which of the following hypothesis tests automatically include blocking as part of the design A two sample t test test E none of these B matched pairs t test...
- Q Question 2 A 1934 investment earns 7 2 interest compounded semi annually Write an equation for the value of the investment as a function of time in years b Determine...
- Q Design a study Question 3 Marine iguanas do not really pay attention to humans Historically they have had no reason to fear them Now with the influx of tourists the...
- Q 4 A researcher planning a survey of heads of households in a particular state has census lists for each of the 23 counties in that state The procedure will be...
- Q 12 A young woman works two jobs and receives tips for both jobs As a hair dresser her distribution of weekly tips has mean 65 and standard deviation 5 75...
- Q 5 A study is made to determine whether studying Latin helps students achieve higher scores on the verbal section of the SAT exam In comparing records of 200 students half...
- Q Question 2 Dr Bicep is studying muscle growth He randomly selects 30 patients to add instant protein to their daily diet and 30 patients to eat as they normally would...
- Q 1 In one study subjects were randomly given either 500 or 1000 milligrams of vitamin C daily and the number of colds they came down with during a winter season...
- Q 3 To survey the opinions of bleacher fans at Wrigley Field a surveyor plans to select every one hundredth fan entering the bleachers one afternoon Will this result in a...
- Q 2 Ann Landers who wrote a daily advice column appearing in newspapers across the country once asked her readers If you had it to do over again would you have...
- Q 1A What are the null and alternative hypotheses in this example Scores on a standardized test have a mean of 70 Modifications are made to the test and an educator...
- Q Let z denote a random variable that has a standard norma your answers to four decimal places USE SALT a P 0 79 z 0 54 b P Z 3...
- Q 1A What is the purpose of a hypothesis test Compare the idea of hypothesis test with criminal trial B What do we do at the start of hypothesis test and...
- Q Suppose that follows a chi square distribution with 6 degrees of freedom Use the ALEKS calculator to answer the following a Compute P 6 x 9 Round your answer to...
- Q 7 points Check your understanding A test is made of Ho 40 versus H 40 The test statistic is z 1 28 Find and interpret the P value Hint P...
- Q Cholesterol levels The National Health and Nutrition Examination Survey NHANES measured the serum HDL cholesterol levels in a large number of women Following is a sample of 40 HDL levels...
- Q 16 4 points The dean of a business school wants to determine whether the mean starting salary of graduates of her school is greater than 50 000 She will perform...
- Q A scientist claims that more than 4 percent of mammals are monogamous For which confidence interval should you reject Ho 0 03 to 0 06 0 07 to 0 08...
- Q Submit quiz Scores on a standardized intelligence test are normally distributed with a mean of 100 and a standard deviation of 10 Use the 68 95 99 7 Rule to...
- Q Consider the Standard Normal distribution The mean is always and the standard deviation is always Next Question
- Q Determine whether the following statement is true or false A score in the 50th percentile on a standardized test is the median Choose the correct answer below A The statement...
- Q A random sample of 56 fluorescent light bulbs has a mean life of 645 hours and assume that the population standard deviation is 31 hours Construct a 95 confidence interval...
- Q In a sample of 10 randomly selected women it was found that their mean height was 63 4 inches From previous studies it can be assumed that the population standard...
- Q In a random sample of 60 computers the mean repair cost was 150 and assume that the population standard deviation is 36 Construct a 90 confidence interval for the population...
- Q A group of 49 randomly selected students has a mean age of 22 4 years and assume that the population standard deviation is 3 8 Construct a 98 confidence interval...
- Q The grade point average collected from a random sample of 150 students Assume that the population standard deviation is 0 78 Find the margin of error if c 0 98...
- Q Find the margin of error for the given values of c o and n c 0 95 o 2 7 n 100 E Click the icon to view a table...
- Q height was recorded for each high school basketball player in a sample of 30 A 95 confidence interval for u is 11 22 inches a The individual object in the...
- Q A sample of 30 incoming college students was taken and whether or not they took the SAT in high school was recorded A 95 confidence interval for p is 9...
- Q Practice 1 You roll a six sided die What is the probability of rolling a 1 or an 2 You roll a six sided die What is the probability of...
- Q A new car that is a gas and electric powered hybrid has recently hit the market The distance travelled on 1 gallon of fuel is normally distributed with a mean...
- Q The percentage of people taking the test who score between 183 and 909 is This question 1 point s possible Scores on the GRE Graduate Record Examination are normally distributed...
- Q 2 7 points The mean height of adult women in the U S is 63 7 inches with a standard deviation of 4 inches A sociologist believes that taller women...
- Q about a mean using the critical value method 4 7 points Example Hypothesis Test Critical Value A computer software vendor claims that a new version of their operating system will...
- Q 7 points Example Making a Decision about Hel Suppose the P value of a hypothesis test is P 0 0266 a Do you reject Ho at the a 0 01...
- Q 9 2 1 Perform hypothesis tests 17 7 points Example Hypothesis Test A College Board study suggests that coached students taking the SAT should have a mean score of approximately...
- Q 9 4 1 Test a hypothesis about a proportion using the P value me 27 7 points Example Hypothesis Test P value An educational specialist is studying attitudes of teachers...
- Q 9 4 2 Test a hypothesis about a proportion using the critical value method 28 7 points A nationwide survey of working adults indicates that only 45 of them are...
- Q son grac 3 What is the probability that a tool selected at random is defective given that the tool was produced by the new method
- Q Red Background Blue Background Words were displayed on a computer screen with background colors of red and blue Results from scores on a test of word recall are given below...
- Q The function f R R is defined by f x 4 2 and is plotted below displaying the use of the trapezium rule to calculate the area under f on...
- Q Considering the selling price of items from a large estate sale of a wealthy individual a Is the median item value more or less than the mean value Why Typed...
- Q CQ1 Considering the selling price of items from a large estate sale of a wealthy individual a Is the median item value more or less than the mean value Why
- Q Find the mean median and mode of each data set 7 1 2 0 5 1 1 4 3 2 0 5 3 Mean 2 25 Median 2 Mode 8...
- Q 3 50 Baseball Strike In 1994 major league baseball players went on strike At the time the average salary was 1 049 589 and the median salary was 337 500...
- Q Note Reported interquartile ranges will vary depending on technology 3 39 Name two measures of the center of a distribution and state the conditions under which each is preferred for...
- Q 40 48 56 64 72 Age of CEO years Televisions The histogram shows the number of televisions e homes of 90 community college students Judging from the ogram what is...
- Q RY 3 15 Real Estate Prices Example 4 Look at the two histograms created from 2009 real estate data taken from the Ventura County Star and decide whether you think...
- Q Y 3 7 Paid Vacation Days Example 2 This list represents the numbers of paid vacation days required by law for different countries Source 2009 World Almanac and Book of...
- Q 3 5 Billionaires According to Forbes com the numbers of bil lionaires in the five states in the Midwest with the most billionaires are given in the table Illinois Wisconsin...
- Q 3 2 Houses A real estate agent claims that all things being equal houses with swimming pools tend to sell for less than those without swimming pools What does this...
- Q How much can you afford to borrow You can afford monthly payments of 500 If current mortgage rates are 3 03 for a 15 year fixed rate loan how much...
- Q The measure of central tendency that is found by adding the lowest and highest data values and dividing the sum by 2 is called the mode median
- Q states that the mean sodium level for healthy adults is 140 mEq per liter of blood A medical researcher believes that because of modern dietary habits the mean sodium level...
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