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Question: You notice at the gym that it appears more women tend to work out together, whereas more men tend to work out alone. To determine whether this difference is significant, you collect data on the workout preferences for a sample of men and women at your gym. The data follows.
Males
Females
Together
5
8
Alone
7
6
a. What statistical test should be used to analyze the data?
b. Identify H0 and Ha for this study
c. Conduct the appropriate analysis.
d. Should H0 be rejected? What should the researcher conclude?
x and s are equal to 3.7 and 0.5, respectively, find a 99% confidence interval for the mean pH in rainfall and interpret the interval.
Compute the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83 last month.
The mean time to expose a single panel in a circuit-board plant is two minutes with a standard deviation of 1.5 minutes. What is the natural coefficient of variation?
Calculate the missing values in the following. The F ratio is = 5.00 between treatments SS DF Ms If withing treatments has a SS of 96, what is the degree of fredom and MS.
I have computed an analysis of variance for three groups with 10 observations per group. Evaluate the degrees of freedom for the F test
We will test to determine if there evidence of an improvement on the final examination, at the 1% significance level. What is the alternate hypothesis?
Estimate the probability the store will gross over $850 a) Fewer than 5 out of 10 business days.
At a local university, sample of 49 evening students was selected in order to determine whether the average age of evening students is significantly different from 21. The average age of students in the sample was 23 with a standard deviation of 3..
Aircraft are used to sow seed and to spread fertilizer.
Why is expectation important? Explain what the expected value of an experiment or a business represents. What does it mean to have an expected value of 0? Provide an example of expectation and the use of the formula for expected value.
A human resources director, on learning about the regression effect, decides to hire people who have been fired by their previous employer for poor performance.
university city is a town of more than 200000 persons with over 50000 university and community college students. it
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