Statistics question and answers for October 22, 2023
- Q State your decision to the significance test in terms of the null hypothesis Consumer data reports that 50 of shoppers who enter a store on Black Friday end up making...
- Q There is a positive correlation between an individual s level of education and their annual income Therefore it can be concluded that nothing can be concluded from a positive correlation...
- Q Identify the margin of error for the confidence interval A recent poll reported a 95 confidence interval of 0 48 0 52 to estimate the proportion of Florida voters in...
- Q Part 1 of 4 State the null and alternate hypotheses Ho The shift and reported symptoms are H The shift and reported symptoms are not This hypothesis test is a...
- Q the most appropriate response In a statistical test of hypothesis what happens to the rejection region when the value of alpha the significance level is increased The rejection region increases...
- Q For the given significance test explain the meaning of a Type II error It has been reported that the proportion of college seniors who have student loans is 72 The...
- Q termine the critical value Using the z tables or t tables determine the critical value for the right tailed z test with a 0 10 1 282 1 645 2...
- Q the null and alternative hypotheses you would use to test the following situation Toasted O s are sold in boxes that have an advertised mean weight of 16 ounces If...
- Q the null hypothesis Is achieving a basic skill level in a subject independent to the location of the school A random sample of students categorized by the location of school...
- Q the expected count under the null hypothesis A football coach was interested in whether the number of points his football team scored over the course of the season was uniform...
- Q Conduct the appropriate hypothesis test and compute the test statistic It is claimed that the proportion of doctors who recommend the leading brand of ibuprofen is 90 To test this...
- Q the most appropriate response A hypothesis test is conducted in which the alternative hypothesis is that more than 10 of the population is left handed The p value for the...
- Q Use the model to make the appropriate prediction A doctor wanted to determine whether there was a relation between a male s age x and his HDL cholesterol y Data...
- Q No smoking The General Social Survey conducted a poll of 653 adults in which the subjects were asked whether they agree that the government should prohibit smoking in public places...
- Q Part 1 of 2 a Compute the expected frequencies under the null hypothesis Round your answers to two decimal places Siblings 0 1 2 3 4 More than 4 0...
- Q A recent study examined the effects of carbon monoxide exposure on a group of construction workers The following table presents the numbers of workers who reported various symptoms along with...
- Q Do college students enjoy playing sports more than watching sports A researcher randomly selected ten college students and asked them to rate playing sports and watching sports on a scale...
- Q The standard deviation for the resting heart rates of Rio Hondo Students was 12 beats per minute bpm The actual sample data is below 61 63 64 65 65 67...
- Q Do shoppers at the mall spend more money on average the day after Thanksgiving compared to the day after Christmas The 58 randomly surveyed shoppers on the day after Thanksgiving...
- Q You work for a soft drink company in the quality control division You are interested in the standard deviation of one of your production lines as a measure of consistency...
- Q The commercial for the new Meat Man Barbecue claims that it takes 9 minutes for assembly A consumer advocate thinks that the assembly time is higher than 9 minutes The...
- Q For each scenario listed below determine whether the scenario represents an Independent Samples or Dependent Samples Matched Pairs situation by placing the appropriate letter in the box provided a Comparing...
- Q Suppose the 95 confidence interval 198 212 represents the mean number of eggs Henrietta the Hen lays per year The 95 confidence interval 220 246 represents the mean number of...
- Q a Compute the expected frequencies Category Observed Part 1 3 Expected 63 Part 2 of 3 1 67 The P value is 2 45 36 3 13 9 4 55...
- Q April May June July August September October November December Send data to Excel Part 0 2 28 33 34 43 Can you conclude that false alarms are not equally likely...
- Q a 0 10 level of significance Part 1 of 2 a Find the P value Use Excel round to four decimal places The P value is 0 7727 Part 1...
- Q Part 1 of 3 a How many students got a B How many got an A There were 8 B grades and 8 A grades Part 1 3 Part 2...
- Q Following are observed frequencies The null hypothesis is Ho P 0 35 P 0 20 P3 0 05 P4 0 4 Category 1 Observed 67 Part 0 3 Part 1...
- Q For the following observed and expected frequencies Observed 41 Expected 45 Part 0 2 Part 1 of 2 22 26 Can you conclude that the distribution of observed frequencies differs...
- Q Grade distribution A statistics teacher claims that on the average 10 00 of her students get a grade of A 20 00 get a B 10 00 get a C...
- Q The probability distribution of X the number of males with tinnitus ringing ears among 6 randomly selected males is as follows 0 aN P X a 0 57 1 exactly...
- Q The following refer to the following data set 91 5 91 5 77 8 65 1 91 5 63 6 79 8 70 8 55 8 83 8 What is...
- Q a Find the following values Round to two decimal places as needed Q b Identify the box and whiskers pilot for this data modified as necessary 01 Median 3 0123...
- Q A randomly selected card from a standard 52 card deck is noted The card is then replaced the deck is shuffled and a second card is selected and noted What...
- Q A boy owns 1 pairs of pants 5 shirts 8 ties and 6 jackets How many different outfits can he wear to school if he must wear one of each...
- Q X 0 1 2 3 P x 0 1 0 25 0 05 0 6 Find the mean of this probability distribution Round your answer to one decimal
- Q The table contains the number of M M s of each color that were found in a case M M Distribution Blue 467 P blue P brown P green P...
- Q The class ranks of 20 students selected for a survey about cafeteria food at a high school are shown in the table below Freshman Use these data to complete each...
- Q date int 20210113 20210113 20210113 20210113 20210113 20210114 season startTime int chr 20202021 2021 01 13T22 30 00Z 20202021 2021 01 14T01 00 00Z 20202021 2021 01 14T00 00 00Z...
- Q The ages of the first 16 U S presidents at the time of their first inauguration are displayed below president Washington John Adams Jefferson Madison Monroe J Q Adams Jackson...
- Q CQ1 Recall from lecture that a z score can be used to describe how many standard deviations an observed value is from the mean this sort of description is usually...
- Q B SECTION 4 1 4 1 Predicting Land Value Both scatterplots concern the assessed value of land with homes on the land and both depict the same observations A b...
- Q Question 7 You work for a large farm with many fields of corn You are investigating the mass of a sample of ears of corn You gather the following data...
- Q 4 28 See Saw The table gives data on the heights above ground of the left and right seats of a see saw in feet Assume the trend is linear...
- Q TRY 4 5 Weight Loss Example 1 The scatterplot shows the actual weight and desired weight change of some students Thus if a student weighed 220 and wanted to weigh...
- Q 4 3 Car Value and Age of Student The scatterplot shows the age of students and the value of their cars according to the Kelley Blue Book Does it show...
- Q Find the producers surplus at a price level of p 67 for the price supply equation below p S x 10 0 1x 0 0003x The producers surplus is Round...
- Q A manufacturer guarantees a product for 1 year The lifespan of the product after it is sold is given by the probability density function below where t is time in...
- Q Use a graphing calculator to graph the normal probability density function f x 1 o 2 H 400 and the standard deviation 200 Choose the correct graph below O A...
- Q a 0 7 3 1 0 a 1 2 a 2 0 03 1 1 a 0 9 Suppose that the system shown in the above figure consists of parts...
- Q Clearly and neatly show all work for each problem Round all final answers to the nearest dollar Do not round intermediate work 1 Velma currently has a job that pays...
- Q 2 Velma plans to put the unused portion of her paycheck towards paying off her credit card As of September 1st the beginning of her credit card payment cycle Velma...
- Q traditionally been 60 A policy maker claims that the proportion is less than 60 now that one of the recycling centers has been relocated If 125 out of a random...
- Q State the type of sample 1 A radio station asks to listeners to call in and give their opinion on the song just played 2 A Student selected books from...
- Q D list are pulse rate of 20 females Selected for a test 80 94 58 66 56 82 78 86 88 56 36 66 84 76 78 64 66 78...
- Q list are pulse rate of 20 females Selected for a test 80 94 58 66 56 82 78 86 88 76 78 64 66 78 64 56 36 66 84...
- Q econds of eruption of the old Faith ful exertion of the patioral gey parn 125 240 248 203 240 248 205 241 249 221 241 249 225 2242 250 229...
- Q A New muscle relaxantin foil is available The lapse between administration of the drug beginning effects Of the druy is normally distributed with a mean of 38 minutes and a...
- Q Find the linear quadratic and logarithmic functions that best fit the data points 1 4 6 2 5 0 3 6 0 4 6 2 and 5 6 5 Which...
- Q You have a friend that is taking statistics at another college They are struggling with confidence intervals and hypothesis testing What advice would you give your friend about how to...
- Q You read an article which states that 80 of adults in your city have a high school diploma You do not believe this statement and decide to test it a...
- Q A marketing survey involves product recognition in New York and California Of 458 New Yorkers surveyed 183 knew the product white 176 out of 514 Californians knew the product At...
- Q A survey was conducted to determine the average loss in home value in a certain community A random sample of 23 homes found a mean of 12130 with a standard...
- Q A manufacturer makes steel rods that are supposed to have a mean length of 50 centimeters A retailer suspects that the rods are running short The mean length for a...
- Q In an article about health care coverage it was claimed that 25 of residents of Texas do not have health care coverage In a random sample of 260 residents of...
- Q Regarding the previous question If it were later determined that it was important to be more than 95 confident and a new survey was commissioned how would that affect the...
- Q The following data are the ages of randomly selected patients in hospital intensive care units 4 38 64 35 67 42 29 68 62 74 58 Construct a 90 confidence...
- Q Two researchers Beth and Frank ask a random sample of teenagers whether or not they had been to the movies in the last month They find that their sample proportion...
- Q 1 What is the difference between probability and odds Give an example of each 4 pts
- Q If you wanted to decrease the width of your confidence interval would you increase or decrease your confidence level O increase decrease neither changing the confidence level does not change...
- Q Part 2 of 5 Find the critical value Round the answer to at least two decimal places The critical value is 2 4403 Part 2 5 Part 3 of 5...
- Q Ho 0 0 H 0 0 This hypothesis test is a left tailed test Part 1 5 Part 2 of 5 Find the critical value Round the answer to at...
- Q and the critical value Round the answer to two decimal places The critical value fo 01 is 10 97 Compute the test statistic Round the answer to two decimal places...
- Q H 0 This hypothesis test is a left tailed Find the critical value Round the answer to two decimal places The critical value is 2 849 Part 2 5 test...
- Q There is statistically significant evidence to conclude that there is a correlation between the amount of time customers spend at the store and the amount of money that they spend...
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