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You have to determine that your cutoff value at level a = 0.05 is 1.645 when testing whether the mean of a population is significantly different from 1.5. If you calculate a test statistic of 1.8 what is the proper conclusion?
A) you do not reject Ho.
b) You would need to calculate the p-value to determine significance
C) You would need to calculate the confidence interval to determine significance.
D) you reject Ho.
Assume that Leo advertises "If it takes more than 30 minutes to get your pizza, you get it free". What percentage of his take-out pizzas will have to give away free?
Place the steps below in the correct order for the construction of a control chart.
A survey of the residents of a new subdivision on why they happened to select that area in which to live. You also wish to secure some information about what they like and do not like about life in the subdivision.
Determine the event that the sum of the numbers falling uppermost is less than or equal to 7
Decision making under risk is the same as decision making under uncertainty because in both the probabilities are unknown.
What percentage of bottles can we expect to have a volume less than 32 oz?
There is concern about the percent of on-time flights. A recent survey of two major airlines yielded the following results. At α = 0.05 test the claim that there is a difference in proportions of on-time flights.
What is the distinction between a one-sided and a two-sided hypothesis test in this problem?
To evaluate average annual expenses of students on books and class materials sample size 36 is taken.
What control chart(s) would you use for this data and what are the final control limits?
Which test should we use to determine whether the difference between Mesa and Tempe is statistically significant? Why? Should it be one or two-tailed?
Suppose that n trials of a binomial experiment result in no successes.
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