Statistics question and answers for January 11, 2024
- Q A New York Times article titled For Runners Soft Ground Can Be Hard on the Body considered two perspectives on whether runners should stick to hard surfaces or soft surfaces...
- Q The national average SAT score is roughly 1500 We would like to see if the high school seniors who apply to Duke have higher than average SAT scores We randomly...
- Q More than 18 of people support legalizing gay marriage Express the null and alternative hypotheses in symbolic form for this claim enter as a percentage Ho P H p Use...
- Q A commonly cited standard for one way length duration of school bus rides for elementary school children is 30 minutes A local government office in a rural area randomly samples...
- Q The mean weight of male nurses working at a local hospital is more than 174 lbs Express the null and alternative hypotheses in symbolic form for this claim Ho p...
- Q To evaluate the effectiveness review sessions a professor gave a pre test before the review and a post test after The results are shown in the table below 50 REE...
- Q post test after The results are shown in the table below Pre test 1 Post test 48 58 46 55 65 55 60 60 46 59 42 63 42 69...
- Q Solve the equation for the variable Write your solution as a simplified root If there are 2 solutions list them with a comma separating them Example 27 27 or 3...
- Q Solve the radical equation 19x 2 3x Enter the smallest value for a first X1 X2
- Q 3x 16 x 2 X
- Q Solve 9 x 7 4 10 for x
- Q Solve the proportion 29 X 26 42 Round to two decimal places if necessary
- Q Use the quadratic formula to solve the equation Be sure to simplify your answers Enter both answers separated by a comma 4x 64 0
- Q Solve the proportion 38 46 48 8
- Q Solve 2x 7 3
- Q olve the absolute value equation or indicate that the equation has no solution with x 2 7
- Q Solve the equation 6x 10 3 algebraically If your answer is a fraction write it in reduced fraction form Do NOT convert the answer to a decimal X
- Q 1 5 x 4 8x 10
- Q 1 4 x 4 3x 6 3
- Q You spin the spinner once 3 2 What is P divisor of 42 Simplify your answer and write it as a fraction or whole number
- Q 3 If the population deviation o is known and we wish to estimate the population mean u with 95 confidence what is the appropriate critical value z to use a...
- Q 6 A box contains 4 red and 3 green ornaments TWO ornaments are randomly selected without replacement Find the indicated probabilities A What is the probability both ornaments are red...
- Q E 5 A store offers a special Christmas purchase in which for a fixed cost you can choose from 1 of two pants 1 of four shirts and 1 of...
- Q Complete parts a through d for the sampling distribution of the sample mean shown in the accompanying graph Click the icon to view the graph a What is the value...
- Q post test after The results are shown in the table below Pre test 1 59 57 66 44 73 64 59 72 51 Post test 2 65 31 56 48...
- Q Several years ago 47 of parents who had children in grades K 12 were satisfied with the quality of education the students receive A recent poll asked 1 105 parents...
- Q As part of a survey 17 college graduates and 18 non graduates were asked How many hours did you spend at your job last week The results are shown in...
- Q A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus due to acid reflux The manufacturer of the drug claims...
- Q 19 Which of the following is a negative side effect of using macroeconomic policies to offset a recessionary gap A crowding out of private investment B possibly unpredictable consequences of...
- Q Two professors at a local college developed a new teaching curriculum designed to increase students grades in math classes In a typical developmental math course 56 of the students complete...
- Q Twenty years ago 56 of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science A...
- Q Test the hypothesis using the P value approach Be sure to verify the requirements of the test Ho p 0 84 versus H p 0 84 n 500 x 410...
- Q Explain what a P value is What is the criterion for rejecting the null hypothesis using the P value approach Explain what a P value is Choose the correct answer...
- Q Managers of a sports arena s parking garage keep track of the duration of time customers park their cars in the garage Shown in the stem and leaf display below...
- Q In the class we have discussed about how to derive the probability of type ll for the lower tailed test Please follow the similar procedure and derive the probability of...
- Q Side effects of Avandia Rosiglitazone is the active ingredient in the controversial type 2 diabetes medicine Avandia and has been linked to an increased risk of serious cardiovascular problems such...
- Q 0 Polymer composite materials have gained popularity because they have high strength to weight ratios and are relatively easy and inexpensive to manufacture However their nondegradable nature has prompted development...
- Q The Stanford University Heart Transplant Study was conducted to determine whether an experimental heart transplant program increased lifespan Each patient entering the program was designated an official heart transplant candidate...
- Q An article in the San Jose Mercury News stated that students in the California state university system take 4 5 years on average to finish their undergraduate degrees Suppose you...
- Q A company has a policy of retiring company cars this policy looks at number of miles driven purpose of trips style of car and other features The distribution of the...
- Q A variable is normally distributed with mean 23 and standard deviation 8 Round your answers to the nearest hundredth as needed a Determine the z score for x 28 2...
- Q 2 A coach wishes to show the relationship between the of fouls committed and the total points scored by their opponent during the season Which of the following graphs would...
- Q 12 A recent sample of 40 stores in North Dakota indicated an average x number of days they held Christmas Sales of 15 with a standard deviation s of 3...
- Q GPAS at CCSU are normally distributed with a mean of 2 49 and a standard deviation of 0 49 Find the z score for a GPA of 3 46 O...
- Q The lower limit of a confidence interval at the 95 level of confidence for the population proportion when the sample size of 100 had 30 successes is a 0 3898...
- Q CHAPTER 8 I 1 One way to reduce the margin of error in a confidence interval is to decrease the confidence coefficient a I II Multiple Choice If a 90...
- Q 95 CI 9 A random sample of 60 people revealed that 37 of them believed the new mayor was managing her job very well Use the Plus Four method to...
- Q III STATISTICAL CONCEPTS APPLIED QUESTIONS Show your calculations Write complete sentences 8 A random sample of 45 door to door encyclopedia salespersons were asked how long on average they were...
- Q Chapter 3 3 4 The probability of an event and the probability of its complement always sum to a 1 d between 0 and 1 b o c 1 The...
- Q 3 BONUS These can help your score they cannot hurt your score Chapters 1 2 1 A sample of students who has taken a calculus test has a mean 60...
- Q Construct a Binomial probability distrubtion table using n 5 and p 0 23 Next record the mean an standard deviation of the distribution below Where necessary round all numbers to...
- Q Can the following table be a probability distribution P x 1 0 3256 0 1755 0 1402 4 0 234 0 1247 8 23WN 5
- Q A fair coin is flipped 14 times Find the probability that more than 6 of the flips turn up tails 0 604736 0 453879 0 633746 0 545104 0 662034
- Q 5 0 10 points A small pond contains seven catfish and two bluegill If seven fish are caught at random with replacement what is the probability that all of them...
- Q In a recent survey 35 indicated chocolate was their favorite flavor of ice cream Suppose we select a sample of nine people and ask them to name their favorite flavor...
- Q An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of 4 emails per hour Assume the arrival of these emails is approximated...
- Q The television show 50 Minutes has been successful for many years That show recently had a share of 26 which means that among the TV sets in use 26 were...
- Q Suppose you wish to find out the answer to the age old question Do people prefer Cola 1 or Cola 2 You conduct a blind taste test in which individuals...
- Q In a clinical trial 20 out of 872 patients taking a prescription drug daily complained of it is known that 1 8 of patients taking competing drugs complain of flulike...
- Q For every football game there is a team that is expected to win by a certain number of points In betting parlance thi is called the spread If point spreads...
- Q Complete parts a through c below of variables were measured for all tornadoes in the United States in 2017 Ho H a Since 1950 the proportion of tornadoes that have...
- Q Two professors at a local college developed a new teaching curriculum designed to increase students grades in mat classes In a typical developmental math course 54 of the students complete...
- Q Determine if the following statement is true or false When testing a hypothesis using the P value Approach if the P value is large reject the null hypothesis This statement...
- Q Use the data values in the table below to calculate the correlation between the variables x and y X 23 2 y 8 72 10 48 14 34 17 2...
- Q Construct a Binomial probability distrubtion table using n 5 and p 0 23 Next record the mean and standard deviation of the distribution below Where necessary round all numbers to...
- Q ed the EAI sampling problem the population mean is 71 300 and the population standard deviation is 5000 For n 30 there is a 0 4176 probability of obtaining a...
- Q 1 Solve the triangle with the given angles and sides 6 points B 52 C 28 a 43c
- Q You may need to use the appropriate appendix table or technology to answer this question The following information was obtained from matched samples taken from two populations The daily production...
- Q Periodically customers of a financial services company are asked to evaluate the company s financial consultants and services Higher ratings on the client satisfaction survey indicate better service with 7...
- Q The time required to assemble a part of a machine follows an exponential probability distribution with a mean of 16 minutes Round your answers to four decimal places a What...
- Q The accompanying table gives amounts of arsenic in samples of brown rice from three different states The amounts are in micrograms of arsenic and all samples have the same serving...
- Q b Compute the probability that exactly one of the appeals will be successful Letting x be the number of successful appeals the probability that exactly one of the appeals is...
- Q The accompanying table gives amounts of arsenic in samples of brown rice from three different states The amounts are in micrograms of arsenic and all samples have the same serving...
- Q The accompanying table gives amounts of arsenic in samples of brown rice from three different states The amounts are in micrograms of arsenic and all samples have the same serving...
- Q Pages were randomly selected from one book each from authors A B and C The accompanying table shows the ease of reading scores for those pages Use a 0 05...
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