The proportion of all high school students who watch national news is p = 0.47. A random sample of 50 high school students is selected. Which of the following is the mean of the sampling distribution of  ?

Q: exam is 53.48 and the mean for that same exam is 44.23.  What would be the shape of the distribution…

A: For any Normal distribution, the shape of the distribution can be said if the mean, median and mode…

Q: Q5. What is the range of these data points? Q6. What is the median of these data points? Q7. What is…

A: Q5. The minimum value of the data is 52, and maximum is 109. The range of the data points is,…

Q: You are curious about how the mean age of cars compares for students and faculty. You take a random…

A: We have given that a random sample of 25 students and a random sample of 25 faculty members.

Q: The college Physical Education Department offered an Advanced First Aid course last quarter. The…

A: Givenz-scores of students isSue=-1.30Bill = -0.92mary = 0.00Mark =2.65Ben = 2.04Sam = -1.59

Q: One sample with n = 4 scores has a mean of M = 12, and a second sample with n = 6 scores has a mean…

A:

Q: The college Physical Education Department offered an Advanced First Aid course last summer. The…

A:

Q: Construct a 90% confidence interval for the true difference between the mean amounts of time spent…

A:

Q: Find the value of P if the mean of the following distribution is 4 2 3 f P. 1,

A:

Q: A bookstore found out that 23% of their customers buy a book, 34% of their customers buy two books,…

A: Given: Let X represents the number of books that customers buy. The random variable X can take…

Q: 2. For the data in the table below, find the sum of the absolute deviations for the predicted values…

A: Given observation x y ypred =3.6x-0.4 |y-ypred| 1 3 3.2 0.2 2 7 6.8 0.2 3 9 10.4 1.4 4…

Q: f the population mean is 12.45 what is the mean of the sampling distribution of its mean

A: Given data,  population mean is 12.45

Q: A sample mean has a z= -4.0 on the sampling distribution created from the population of psychology…

A:

Q: A population is normally distributed with µ = 90 and σ = 8. For this population, which score is the…

A: X follows a Normal distribution with mean = 90 and S.D = 8 Then z=(x-mean)/SD = (x-90)/8  follows…

Q: Which of the following is a correct interpretation of this chart?   a. The distribution is skewed…

A: According to the given histogram, it can be seen that initial data are higher. Therefore, it is…

Q: Which of the following z scores are above the mean? Choose all that apply.     0     1.35…

A: For normal distribution, the mean is equal to 0

Q: 1a. The distribution of the mark scored by three candidate in a professional examination are 54, 24,…

A: 1a. Given The data is as follows: 54, 24, 36

Q: You are curious about how the mean age of cars compared for students and faculty. You take a random…

A:

Q: A USA Today poll asked a random sample of 1012 U.S. adults what they do with the milk in the bowl…

A: From the provided information, Sample size (n) = 1012 A spokesman for the dairy industry claims that…

Q: which of the following best describes the distribution of data? negatively skewed postively skewed…

A: Since you have asked question related to the distribution of the data, we will solve that for you.…

Q: (a) Describe the sampling distribution of p, the sample proportion of adults who do not own a credit…

A: Given,n=400p=0.32

Q: At a certain concert, 34 % of the audience was under 20 years old. A random sample of n = 249…

A: Given,sample size(n)=249sample proportion(p^)=0.34

Q: 3. Explain why the sampling distribution of the sample proportion is assumed to be Normal. Show your…

A:

Q: At a small local college, 78% of all students are receiving some kind of financial aid. A local…

A: Given,population proportion(P)=0.78sample size(n)=75and X=58

Q: for the set of scores 10 15 20 20 15 calculate the range variances and standard deviation by hand

A: Given that ; scores(x) ; 10 15 20 20 15 By using formula  Range = highest value - lowest value…

Q: -of the data in a distribution is within 3 standa the mean? 66% 0% 50% 89%

A: Solution : According to the Chebyshev's theorem, (1-1/k^2) of the observation fall within k standard…

Q: (d) Does the distribution of values appear to be reasonably symmetric? If not, how would you…

A: Stem and leaf plot is a representation of data points.

Q: percentages:

A:

Q: Olivia, Nicholas, Chloe, and Ethan each took many samples from the same population of students. The…

A: Given: 4 samples are given  Olivia, Nicholas, ethan and chloe And the number of students in each…

Q: (a) Find (the mean of the sampling distribution of the sample proportion). HA =0 (the standard…

A: Given : Population proportion of the winning scratchers , p = 0.45 Sample size , n = 8 p^ represents…

Q: The following data is for the hours of effectiveness for a drug for six patients. Drug A: 19 hours,…

A:

Q: In a normal distribution, what percentage of scores falls below and score of -2.33

A:

Q: (a) Describe the sampling distribution of p, the sample proportion of adults who do not own a credit…

A:

Q: According to a recent​ survey, 53% of adults say they never wear a helmet when riding a bike.…

A:

Q: Q5: b) For a dataset that has a symmetrical distribution, compare the mean and the median.

A: We have to compare the mean and median for the dataset that has a symmetrical distribution.

Q: A recent survey of a new diet cola reported the following percentages of people who liked the taste.…

A:

Q: he college physical education department offered an advanced first aid course last summer. The…

A: Given data, Students Z-score Robert 1.24 Juan 1.66 Haley -1.84 Joel 0.00 Jan -0.84…

Q: a. What is the distribution of X? X N( b. What is the median giraffe height? ft. c. What is the…

A: Define the random variable, X : Height of an adult  Given that the Height of an adult follows a…

Q: contributor for the local newspaper is writing an article for the weekly fitness section. To prepare…

A: Given Data : For Sample 1 x̄1 = 4.8 n1 = 57 σ1= 0.8 For Sample 2…

Q: A secretary makes 2 errors per page, on average. A. What is the probability that on the next page he…

A: Givensecretary makes 2 errors per page'x' represents average number of errors per…

Q: Which of the following would you expect not to have a normal distribution? The actual weight of…

A: a) The actual weight of rice in a bag labeled as a 20-pound bag is not normal because in this case,…

Q: Determine the sampling error if the grade point averages for 10 randomly selected students from a…

A: The population mean is 2.9, and sample mean is 2.6. The sampling error is, x¯-μ=2.6-2.9=-0.3 Thus,…

Q: A. Find the mean and standard de the sampling distribution of p,- P. Justify your answer.

A: The mean is given by p1 - p2 = 0.86 - 0.54 p1 - p2 = 0.32   The standard deviation of the sampling…

Q: If the mean of a positively skewed distribution is 126, which of these values could be the median of…

A: Ans - Given, the mean of positively  skewed distribution is 126

Q: The Credit Risk Department of a major bank estimates the default rate on loans under $10,000 to be…

A: Given: Population proportion (p) = 4% = 0.04 Number of loans that will be made (n) = 2400

Q: A secretary makes 2 errors per page, on average. A. What is the probability that on the next page he…

A: Given, A secretary makes 2 errors per page on average. Consider X is the random variable that…

Q: Select the best response. The sampling distribution of the mean will be approximately Normaleven…

A: Central limit theorem: As the sample size larger or the distribution of the population follows…

Q: College freshmen took a psychology exam. If the mean is 80, the SD is 10, and the scores have normal…

A: Follow the procedure given below.

Q: A contributor for the local newspaper is writing an article for the weekly fitness section. To…

A: Given information: For the first sample (people who exercise in the morning), Sample size, n1=56…

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.