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What is the probability that a well shuffled deck will produce a straight flush (five cards of one suit in order; A,K,Q,J,10 of spades or 5,4,3,2,A of hearts, etc. note that the ace can be high or low.
A sample of 40 decaffeinated-coffee drinkers showed a mean of 5.84 cups per day, with a standard deviation of 1.36 cups per day. Use the .01 significance level. Compute the p-value.
Assume that we will randomly select a sample of 64 measurements from a population having a mean equal to 20 and a standard deviation equal to 4.
What critical value should the company officials use to determine the rejection region?
Provide a descriptive statistic (to 1 decimal) that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities.
There is evidence to reject the claim that the rodent type and the success of finishing the maze are not related because the test value 3.841 > 2.773
The principal randomly selected six students to take an aptitude test. Their scores were: 76.5 85.2 77.9 83.6 71.9 88.6. Determine a 90% confidence interval for the mean score for all students.
A year after graduation. Find the probability that 8 randomly selected graduates all find jobs in their chosen field within a year of graduating.
A car rental office checks out an average of 30 cars per day with a standard deviation of 8 cars. If a sample of 25 days of operation is selected and the sample mean is computed.
When the rats In the sample reach 10 weeks old, each rat is weighed. The mean weight for this sample is M=974. Sketch the appropriate distribution, and locate the critical region for the alpha level =.05.
a pharmaceutical company is checking their medicines according to the regulations imposed. the company must ensure that
The world's smallest mammal is the bumblebee bat. Shown to the right are weights(in grams) from a sample of those bats. Use the traditional method and significance level of .05 to test the claim that these bats come from the same population having..
The McNemar test is a test on a 2x2 classification table when you want to test the difference between paired proportions. Chi-square test for 2X2 tables compares the tallies or counts of categorical responses between two (or more) independent grou..
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