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The mean amount of time a (unnamed) computer server is down is 18.3 minutes with a standard deviation of 5.7 minutes.
a. Assuming we can verify that the data set is approximately normally distributed, what percentage of times will the server be down less than 24 minutes?
b. Assuming we can verify that the data set is approximately normally distributed, 68% of the server downtimes will be within what range?
A savings account was opened for a baby on 1985 with a $100 deposit. No withdrawals or deposits occurred since the account was opened. The current balance of the account is $246.47. Measured in dollars of the year in which the account was opened, how..
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
What is the expected value and variance for the number of contacts in eight attempts?
Researchers are studying the absorption of two drugs into the bloodstream. Each drug is to be injected at three dosages. There are 24 people in the study, and they are randomly divided into six groups.
In a normal frequency distribution, 32% of the cases:
State the null and alternative hypotheses you would use to test whether the year-end bonuses paid by Jones & Ryan were different from the population mean.
The null hypothesis is that the distribution of mother's educational level is the same for both treatment groups. The value of the chi-square statistic is 7.422. Evaluate the P-value
The researcher computes the sum of squares for groups as SSG = 40030 and the sum of squares for error as SSE = 414780. The numerical value of the ANOVA F statistic is
The sampling distribution of the average score and Suppose x' is your average pay for the 100 weeks. Then x' has approximately
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be
how many individuals will I need to sample if I want a 95% margin of error to be no more than 3%, I want to know if the results are significant at = 10%. With the information given.
Find the percent of a standard Normal model found in the given region. Round to the nearest hundredth of a percent.
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