1-The mean price of new homes from a sample of houses is $155,000 with a standard deviation of $15,000. The data set has a bell-shaped distribution. Between what two prices do 95% of the houses fall?
Refer to the sample statistics of Exercise 5 and use z-scores to determine which, if any, of the following house prices is unusual.
$200,000
$55,000
$175,000
$122,000

2-The number of wins for each Major League Baseball team in 2000 are listed. (Source: Major League Baseball)
87
85
83
74
69
95
90
79
77
69
91
91
82
71
95
94
79
67
65
95
85
73
72
69
65
97
86
85
82
76
Find the quartiles of the data set.
Find the interquartile range.
Construct a box-and-whisker plot.

Solution Summary

This solution is comprised of a detailed explanation of descriptive statistics. This solution mainly discussed the question in which we need to calculate the mean, standard deviation and z scores. The calculation with formula is provided in the solution.

Assume that houseprices in a neighborhood are normally distributed with standard deviation $20,000. A random sample of 16 observations is taken. What is the probability that the sample mean differs from the population mean by more than $5,000?
A. 0.3174
B. 0.1587
C. 0, because it is assumed that the sample mean is equal to

The data given below are taken from two independent samples collected randomly.
Claim: (mu)1 > (mu2)2, alpha = 0.10,
samplestatistics:
x1 (bar) = 500, s1 = 30, n1 = 100
x2 (bar) = 510, s2= 30, n2 = 75
What is the value of test statistics?

Question :
Complaints about rising prescription drug prices caused the U.S. Congress to consider laws that would force pharmaceutical companies to offer prescription discounts to senior citizens without drug benefits. The House Government Reform Committee provided data on the prescription cost for some of the most widely used d

A final exam in Statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70?

7.12
A random sample is obtained from a population with a mean of 50 and a standard deviation of 12.
A. For a sample of n = 4 scores, would a sample mean of M = 55 be considered an extreme value or is it a fairly typical sample mean?
B. For a sample mean of n = 36, would a sample mean of M = 55 be considered an extre

Do the sales prices of houses in a given community
vary systematically with their sizes (as measured in
square feet)? Attempt to answer this question by estimating
a simple regression model where the sales
price of the house is the dependent variable and the
size of the house is the explanatory variable. Use the
sample dat

Eric and Pamela may want to sell this house in 10 years or so in order to get a bigger house. They would hope that the house would appreciate to at least $190,000. Research the appreciation rates of single-family homes in your city, region, or state. Based on your research, do you think it is reasonable to expect this house t

Although most people believe breakfast is the most important meal of the day, 25% of adults skip breakfast (U.S. News & World Report, November 10, 1997). Assume the population proportion is p = .25, and pbar is the sample proportion of adults who skip breakfast based on a sample of 200 adults.
a) Show the sampling distributio

Please solve attached.
Suppose that a random sample of fourteen recently sold houses in a certain city has a mean sales price of $280,000, with a standard deviation of $9000. Under the assumption that houseprices are normally distributed, find a 90% confidence interval for the mean sales price of all houses in this community