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The accompanying relative frequency table is based on data from the 2012 College Bound Seniors Report for California.
a. Construct a relative frequency histogram for SAT critical reading score for males.
b. Construct a relative frequency histogram for SAT critical reading score for females.
c. Based on the histograms from Parts (a) and (b), write a few sentences commenting on the similarities and differences in the distribution of SAT critical reading scores for males and females.
in a report on high school graduation it was stated that 85 of high school students graduate. suppose 3 high school
A customer wants to estimate the average delivery time of a pizza from the local pizza parlor. The customer wants to obtain a sample mean that falls within 3.204 minutes of the true average delivery time with 99% confidence. If the customer knows ..
The mean SAT verbal score is 478, with a standard deviation of 98. Use the Empirical Rule to determine what percent of the scores lie between 380 and 478. (Assume the data set has a bell-shaped distribution)
(a) If A and B are disjoint, P(A) = 0.4 and P(B) = 0.5, then P(A OR B) = 0.9.
The .95 confidence interval for the population μ is (577.1,623.4).- Use a boxplot to verify that there are no outliers.
for the given margin of error and confidence level determine the sample size required. a researcher wants to determine
a bag contains 6 red balls 12 blue balls 7 yellow balls and 4 green balls. gary reaches in and pulls out one ball. if
For random samples of size n = 25 selected from a normal distribution with a mean of m = 50 and a standard deviation of s =20, find each of the following: The range of sample means that defines the middle 95% of the distribution of sample means.
Using Microsoft Excel, create a correlation analysis of Wal-Mart's annual net income over the past 10 years compared with Sears's annual net income over the past 10 years and interpret the results.
in a survey 427 different women are randomly selected without replacement and each woman is asked what she purchased
Suppose that, on average, 3% of the purchasers of airline tickets do not appear for the departure of their fight.
Assuming that the sample is sufficiently large, construct a 99.9% confidence interval for the proportion of all mortgages taken out in this region last year.
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