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The weight of the bags of fertilizer is normally distributed, with a mean of 45 pounds and a standard deviation of 5 pounds. What is the probability that a bag of fertilizer will weigh between 38 and 50 pounds?
suppose that 64 of the students in elizabethtown college are female. if 30 etown students are selected at random what
Develop null and alternative hypotheses to help the bank determine which option would provide the best incentive to consumers.
a regression of height x in inches on hourly earnings y in dollars yields the following
When you calculate CIs for time on task, I notice that you use the critical value from the t-distribution (TINV(0.05, degrees_of_freedom))
The manager wants to adjust the mean to reduce the reject rate. Compute the probability of underfilling for several values of the mean fill.
the data on the weight of male and female wolves from two random samples are as followsfemale 57 84 90 71 71 77 68
a consumer survey is trying to assess how much bad food is being purchased. bad foods are categorized into two types
Difference between the discrete and the continuous random variable.
Assume that z is the test statistic and calculate the value of z∗ for testing the null hypothesis
Polls showed the two main candidates in the 2004 presidential election were nearly tied on the day before the election. To predict the winner a newspaper would like to have a poll that has margin of error less than 1%. Roughly how large a sample w..
Compute the test statistic. Using = 0.05, perform the test using either the critical value approach or the p-value approach. What is your conclusion?
Is there a significant difference the four testing conditions?
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