A car dealer plans to take a customer satisfaction survey with a sample size of 100 customers. Assume that p = 0.50 is the probability that a randomly selected customer is satisfied. Use the sampling distribution of the proportion to find a range that approximately 95% of random samples should fall between. Assume that p = 0.80 is the probability that a randomly selected customer is satisfied. Use the sampling distribution of the proportion to find a range that approximately 95% of random samples should fall between. The car dealer finds that 75/100 customers are satisfied. Based on this sample, which assumption was more realistic: p = 0.50 or p = 0.80 ? Explain your reasoning.

Q: Suppose the true proportion of voters in the county who support a restaurant tax is 0.47. Consider…

A: Given: Sample size n = 203 Proportion of voters in the county who support a restaurant tax p =0.47

Q: The average final exam score for the statistics course is 75%. A professor wants to see if the…

A:

Q: The average final exam score for the statistics course is 75%. A professor wants to see if the…

A: Solution: Given information: n= 12 Sample size  μ= 75  Population mean ∑x =898x = ∑x n=89812=74.8333…

Q: The average final exam score for the statistics course is 77%. A professor wants to see if the…

A: her we use Z test for single mean  assume that the distribution of population is normal  Hypothesis…

Q: Describe the sampling distribution of p. Assume the size of the population is 25,000. n=600, p 0.712…

A:

Q: The annual salary for one particular occupation is normally​ distributed, with a mean of about…

A: The random variable X is the annual salary for a particular occupation. It is normally distributed.…

Q: Suppose that the length of research papers is uniformly distributed from 9 to 22 pages. We survey a…

A: To find 75 percentile of length of individual papers,  we need to find a constant c such that…

Q: Several students from a statistics class each conduct an opinion poll on how much people thought the…

A: The information provided in the question are as follows : The sampling distribution follows normal…

Q: Flip a coin 10 times and record the observed number of heads and tails. For example, with 10 flips…

A: Given that, Flip a coin 10 times and record the observed number of heads and tails. For example,…

Q: For the following situation, find the mean and standard deviation of the population. List all…

A:

Q: The mean of the sampling distribution of Ỹ is always equal to the mean of the population. True O…

A: We have to determine which statement is true for given situation.

Q: Draw a vertical line through a normal distribution for each of the following z-score locations. Find…

A: Hello! Since you have posted 2 different questions, we are answering the first questions. If case…

Q: Describe about the Sampling Distribution of z.

A:

Q: The average final exam score for the statistics course is 76%. A professor wants to see if the…

A:

Q: As the sample size​ increases, the mean of the sampling distribution: a. gets larger b. stays the…

A: We know that the sample size means the number of units in the sample.  We know that by the central…

Q: The more efficient the estimate, the more the sampling distribution

A: Basic: Point estimate is a single number calculated  from a set of data, that is the best guess of…

Q: (a) Suppose a sample of 320 primary care doctors was taken. Show the sampling distribution of the…

A: Solutions  (a) The answer is "" A bell-shaped curve is above a horizontal axis labeled p. In order…

Q: The proportion of students at a large high school who live within five miles of the school is p =…

A: Given: Proportion of students who live within five miles of the school, p=0.19 Sample size, n=17

Q: For the sampling distribution of the mean, o = o. O True O False

A: From the provided information, Sampling distribution of the mean σx̄ = σ

Q: scores for the 14 randomly selected students who were given the colored pens are shown below. Assume…

A: Solution : For the given data : Given data : sample size, n = 14 sample mean, x̄ =…

Q: When working with the sampling distribution of a sample proportion, what do we need to require to…

A: Sampling Distribution of a Proportion There are several ways to calculate the sampling distribution…

Q: The average final exam score for the statistics course is 82%. A professor wants to see if the…

A: a. Suppose μ is the population mean final exam score for students who are given colored pens at the…

Q: The average final exam score for the statistics course is 76%. A professor wants to see if the…

A:

Q: The annual salary for one particular occupation is normally​ distributed, with a mean of about…

A: Population mean μ =136000 Population standard deviation =16000 Sample size n =30

Q: At an outpatient testing center, a sample of 20 days showed these numbers of cardiograms done each…

A: Data 25 31 20 32 13 24 43 12 57 23 36 32 33 32 44 32 52 44 51…

Q: 3. For a final class project, a student plans to survey a representative sample of 50 students and…

A: Provided information is, for a final class project a student plans to survey a representative sample…

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

A:

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: The average final exam score for the statistics course is 75%. A professor wants to see if the…

A: 1. For this study, we should use t-test for a population mean.

Q: Suppose 65% of all college students find watching TV a waste of time. The population proportion is…

A: Consider that p is proportion of all college students find watching TV a waste of time.

Q: 5. If a sample of n = 86 students were taken randomly from the school, describe the distribution of…

A: Suppose it is known that the proportion of students at a local high school that take publictransit…

Q: he average number of cavities that thirty-year-old Americans have had in their lifetimes is 8.  Do…

A: Given information- Population mean, μ = 8 Sample size, n = 15 I am using excel to calculate sample…

Q: A pharmacist finds that 55% of allcustomers prefername brand prescription drugs to generic…

A: "Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: b. The null and alternative hypotheses would be: Ho: 7 Select an answer H1: ?v Select an answer♥ c.…

A: One sample t-test: The one -sample t -test is used to determine whether the mean of sample differs…

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.