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The lower limit for a 95% confidence interval for the population proportion if a sample of size 200 had a 40 success is.
1.) 0.2554
2.) 0.1446
3.) 0.2465
4.) 0.1535
5.) 0.200
John conducted his study to measure self-esteem among victims of domestic violence before and after they complete an 8-week program for abuse victims with 10 individuals. He calculated t = 1.9 from his data.
Calculate the z - scores for the three samples, compare the z score to the t-statistic, is the null hypothesis accepted or rejected?
The average amount of time between a score by either team in college soccer games is 15.2 minutes.
You take a random sample and perform a hypothesis test, getting a p-value of 0.2578. What is the appropriate conclusion? Conclude at the 5% level of significance.
The scheduled commuting time on the Long Island Rail Road from Glen Cove to New York City is 65 minutes. Suppose that the actual commuting time is uniformly distributed between 64 and 74 minutes.
A TV spot in the Channel 22 early news costs $1500. The average quarter hour Adult 25-54 audience is 15,000. What is the CPM?
According to the data from the College Entrance Examination Board, scores on the SAT-I test have a mean of 1017, and Q1 is 880.
A poll found that 38% of male voters and 46% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be:
What extremely important characteristic of the data set is not considered in the hypothesis test?
Compute z values for each and comment on your findings.
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p- value.
A well-established power-drink dispensing machine is programmed to dispense an average of 2.02 liters into a container labled"2 liters". Actual quantities are known to be normally distributed with a standard deviation of 0.015 liters. What is the ..
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