A pharmacist finds that 55% of allcustomers prefername brand prescription drugs to generic prescription drugs. Suppose a sample of 25 customers is selected. a.Is the sampling distribution of ?̂approximately normal? Justify your answer. b.Calculate the mean and standard deviation of the sampling distribution. Show calculations. c.Draw the sampling distribution. Include labeled?̂and z axes.d.Calculatethe probability that more than 60% of the 25 sampled customers prefername brand prescription drugs to generic prescription drugs. Include a z-score calculation and technology statement.

Q: Students in a statistics class took their second test. The following are the scores they earned.…

A: The given information is about the scores.Let X denote the test scores.

Q: A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The frequency histogram for the speeds, in miles per hour, of a sample of 36 cheetahs is shown to…

A: The provided information is as follows:Based on the Histogram the frequency histogram for the…

Q: The Table below shows the average score of the 150 students sampled from the University of the East…

A: The grouped data related to students' marks and the number of students are given: Score Number…

Q: 5. Age at death of 25 people as follows. 78 90 82 90 79 83 88 94 98 77 87 74 77 92 91 79 68 94 77 96…

A: The data set is: 78 90 82 90 79 83 88 94 98 77 87 74…

Q: According to a survey by Harris Interactive conducted in February 2009 for the charitable agency…

A:

Q: The frequency histogram for the speeds, in miles per hour, of a sample of 34 cheetahs is shown to…

A:

Q: I an not a good 9. Dravel 10 Sorry 8 7- 5- 4 3. 1 80 90 100 110 120 130 140 150 F. How many classes…

A: Histogram is given in the question. Total number of students = 39

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 14…

A: b. Claim: The mean wait time greater than for men who wear a tie. Null Hypothesis: H0: μ=14…

Q: . Describe the distribution of the data below. a. Symmetric b. Left skewed c. Right skewed d.…

A: . Describe the distribution of the data below.   a. Symmetric   b. Left skewed   c. Right skewed…

Q: Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the…

A: Basics:

Q: - Place the following scores in a frequency distribution table. Based on the frequencies, what is…

A: Given Solution:

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the indicated…

A: We know that , The central limit theorem for sample means says that if we keep selecting larger and…

Q: 2. The following is the distribution of the percentage of students belonging to a certain minority…

A: A measure of central tendency is a single value that attempts to describe a set of data by…

Q: D. Compute for the mean (??̅) and standard deviation (??̅) of the sampling distribution of the…

A: SET OF POPULATION: {63, 64, 65, 66, 67, 68, 72}  Population mean and standard deviation is computed…

Q: Consider the following data values. 11 68 18 24 38 8 a) Calculate the mean. b) Calculate the median.…

A:

Q: normal. 362, 395, 367, 389, 403, 374, 378, 404, 362, 399, 382, 383, 399, 406, 386, 390 What can be…

A: Answer Given,362,395,367,389,403,374,378,404,362,399,382,383,399,406,386,390The sample size[n] =16We…

Q: For the following set of scores: 30 69 41 51 36 53 60 24 55 44 61 25 74 63 55 13 42 56 54 49 a. I…

A: The given scores are 30, 69, 41, 51, 36, 53, 60, 24, 55, 44, 61, 25, 74, 63, 55, 13, 42, 56, 54, 49.

Q: 5, 8, 11, 14 x 4 5 6 7 8 9 10 11 12 13 14 15 ארד 4 5 6 7 8 9 10 11 12 13 14 15 Interpret the plot.…

A: A. As the sample size decreases, the sampling distribution of the sample mean clusters closer to the…

Q: Test Statistic: P-value = Decision:

A: The independent sample t-test is used when we want to compare two means of independent samples drawn…

Q: The average fruit fly will lay 407 eggs into rotting fruit. A biologist wants to see if the average…

A: Answer  Given  417,435,426,414,435,414,405,439,414,424,419,429,405,433,391,406 sample size [n] = 16…

Q: Listings for 75 single-family homes for sale in a zip code show the following summary statistics for…

A: N = 75 First quartile (Q1) = 18 Median = 64 Third quartile (Q3) = 119 Smallest 5 values : {…

Q: The databelow list the number of laptop computers owned by families in each of 40 homes in a…

A:

Q: It is known that 40% of all customers at a service station pay with a credit card. If a random…

A: Given : It is known that 40% of all customers at a service station pay with a credit card.

Q: The high temperature, in degrees Fahrenheit, for eight cities on the same day are below. Which…

A: Skewness is the measure of the asymmetry of an ideally symmetric probability distribution. The 2…

Q: The following graph shows the curve for a normally distributed variable. Superimposed are the curves…

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have…

Q: The average final exam score for the statistics course is 78%. A professor wants to see if the…

A: Sample size, The data is as follows: 87, 61, 89, 54, 69, 60, 54, 70, 68, 54, 84, 81

Q: A random sample of adult men was asked if they would return the money if they found a wallet on the…

A:

Q: A certain subdivision in Laguna consists of 50 homes. The table shows the frequency distribution of…

A: The question is about frequency distribution Given :   To find : Mean no. of bedrooms for the 50…

Q: According to a recent​ study, 80% of adults say they play games on their smartphone. Suppose we…

A: The provided data is, p = 0.80 n = 200 The mean and standard deviation of the population proportion…

Q: Но: Select an answer H1: Select an answer The test statistic | t (please show your answer to 3…

A: given  μ=15 ,n=13 , x¯ = (sum of sample observations)/no of observations…

Q: A survey asks questions about one's happiness and health. One would think that health plays a role…

A: Given, The survey about one`s happiness and health.   Poor Fair Good Excellent Not too happy…

Q: re interested in knowing the proportion of Texas A&M students who have their own subscription to…

A: In this case, every one in a class of 77 students takes a random sample of 100 Texas A&M…

Q: a.Consider the data set. 2, 3, 5, 8, 9 Compute the population standard deviation. (Round your…

A: Variance: The variance (σ) is the expectation of the squared deviation of the random variable from…

Q: When 30 randomly selected customers left a convenience store, each was asked the number of items he…

A: The question is about ungrouped frequency distribution Given :   To find : 1 ) Ungrouped frequency…

Q: The average final exam score for the statistics course is 74%. A professor wants to see if the…

A: Given: x~N(μ,σ)μ0=74

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.