According to U.S. News & World Report's publication America's Best Colleges, the average cost to attend the University of Southern California (USC) after deducting grants based on need is $29,625. Assume the population standard deviation is $6,600. Suppose that a random sample of 70 USC students will be taken from this population. a. What is the value of the standard error of the mean? (to nearest whole number) b. What is the probability that the sample mean will be more than 29,625 ? (to 2 decimals) c. What is the probability that the sample mean will be within $1,250 of the population mean? (to 4 decimals) d. How would the probability in part (c) change if the sample size were increased to 150? (to 4 decimals)

Q: The distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: In the 1980s, a research study linked drinking coffee to a higher risk of heart disease and pancreat…

A: Introduction: A confounding variable in a study is a variable that is not acknowledged or controlled…

Q: i. Determine the regression equation. (5) ii. Estimate sales when 3 million is spent on advertising…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: 7. In the normal curve, a. the mean, median, and mode are all on the highest point of the curve. b.…

A: The objective is to identify the correct statement related to the mean, median, mode, and standard…

Q: 5. The lengths of walleye in a lake are normally distributed with mean 21 inches and standard…

A:

Q: For the following sample data, answer the following: Remember you can copy and "paste special" the…

A: I will use Excel functions to solve this problem.…

Q: Consider the following sample data. Sample A: 4, 9, 14 Sample B: 75, se, 85 Sample C: 1,e7e; 1,875;…

A: Measure of central tendency measures the central or average value of a dataset. Measured of…

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: a. Approximately % of healthy adults in this group have body temperatures within 3 standard…

A:

Q: According to the Chebyshev's rule, the proportion of observations within 2.5 standard deviations of…

A:

Q: There are 12 employees in a particular division of a company. Their salaries ha a median of $48,000,…

A: Given: Mean salary of 12 employees = $ 65,000 Median salary of 12 employees = $ 48,000 Standard…

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given: Number of employees (n) = 115

Q: A variable is normally distributed with mean 14 and standard deviation 2. a. Find the percentage of…

A: We have to find given probability..

Q: A normal distribution has a mean of 52 and a standard deviation of 15. What is the median? (Enter an…

A: Here is given that, mean is 52 and standard deviation is 15. We will use z- standard normal…

Q: 1. Six major earthquakes had Richter magnitudes 7.0, 6.2, 7.7, 8.0, 6.4, 6.2. (a) What is the mean…

A: Solution

Q: TRUE OR FALSE: A z-score indicates the number of standard deviations a data value is ab below the…

A: Standardized z-score: The standardized z-score represents the number of standard deviations the data…

Q: 1. make a survey report of the number of students per section from grades 7-9 2. create a sampling…

A: The sampling distribution is the distribution of the means of the samples. The mean of the sampling…

Q: Show your work to find the value that is 1.5 standard deviations: a. above the mean. b. below the…

A: From the obtained results, the mean is 9.02 and the standard deviation is 5.7910.

Q: The following are examination scores of 20 mathematics students: 25, 29, 30, 35, 16, 22, 42, 48, 19,…

A: The following information has been provided: 25, 29, 30, 35, 16, 22, 42, 48, 19, 37, 39, 32, 27, 35,…

Q: In an area when customers face technical difficulty with their Internet cable hookup may call an 800…

A: Given: a=30 secondsb=10 minutes

Q: A variable is normally distributed with mean 10 and standard deviation 2. a. Find the percentage of…

A: given data normal distributionμ = 10σ = 2

Q: Determine the correct alternative hypothesis. According to the Federal Housing Finance Board, the…

A:

Q: 2. The instructor claims that her student's mean score for the Final Term Examination is not lower…

A:

Q: An instructor plots the grade distribution for a practice final exam and determines that the grades…

A: For a negatively skewed graph mean<median<mode.

Q: Calculate mean deviation (from mean) from the fóllowing data : Size of items 34 4-5 5-6 6-7 7-8 8-9…

A:

Q: The standard deviation of the sampling distribution of difference scores is called the standard: A.…

A: Given information: The standard deviation.

Q: The IQs of individuals form a normal distribution with mean = 100 and s = 15. A. What percentage of…

A:

Q: 2. An IQ test measures a person’s intelligence. The distribution of IQ scores is unimodal and…

A: Note: Hey, since there are multiple subparts posted, we will answer first three subparts. If you…

Q: 2. In a departmental examination on statistics, the mean grade was 64 and the standard deviation was…

A: Determine the number of students took the examinations.   The number of students took the…

Q: A survey asked the question "What do you think is the ideal number of children for a family to…

A: Given x-bar=3.38 Standard deviation=1.9 n=532

Q: Determine whether the following graph can represent a variable with a normal distribution. Explain…

A: Solution-: Determine whether the following graph can represent a variable with a normal…

Q: The following are the prices (in dollars) of the six all-terrain truck tires rated most highly by a…

A: Answer 158.00,195.00,154.00,127.65,121.99,126.00sample size [n] =6

Q: World Health Organization (http: data/view.main.51310): Country Number of Deaths United States…

A: Since you have posted multiple sub-parts, we will solve the first three sub-parts for you. To get…

Q: In a survey of 1000 people, mean amount of money they spend on buying Starbuck's coffee per month is…

A: a.  M.E.=Zα/2.σn=1.96×0.451000=0.0279 Margin of error: 0.0279

Q: A variable is normally distributed with mean 11 and standard deviation 2. a. Find the percentage of…

A: Let the random variable X follows normal distribution with mean of μ=11 and standard deviation of…