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A recent study focused on the number of times men and women who live alone buy takeout dinner in a month. The information is summarized below.
Statistic Men WomenMean 24.51 22.69Standard deviation 4.48 3.86Sample size 35 40
At the 0.01 significance level, is there a difference in the mean number of times men and women order takeout dinners in a month? Calculation of the p-value is not required.
Compute the probability of a successful operation (i.e., an operation in which at least one hit is a success) if all 3 missiles are launched and a hit within 40 miles of the target is considered a success.
Which of the given properties doesn't apply to theoretical normal distribution?
Critically discuss the purpose of developing a frequency distribution? What is the relationship between the relative frequency and the cumulative frequency? Could a frequency distribution contain qualitative data? Why?
Conduct the following test using 95% level of confidence.
Toss ten unbiased coins once at the same time, what is the probability that seven heads showing up? Use Binomial Distribution to calculate the probability.
Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.
Given that x is a normal variable with mean u = 47 and standard deviation = 6.2, find:
Evaluate z statistic for the Wilcoxon rank sum test, standard deviation for the Wilcoxon rank sum test and P-value for the Wilcoxon rank sum test
Compute the population mean, the population median, the population midrange, the population range, the population variance, the population standard deviation, and the population proportion of odd numbers. Verify the following results:
If the standard deviation is $10,000, can the cable manager conclude that there is a difference? Test at alpha = 0.10.
What proportion of the variability in steel shipments for motor vehicles is described by regression equation?
If we know that 20 people will attend, what price should be charged per person to break even?
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