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1. Listed below are intervals (in minutes) between eruptions of the Old Faithful geyser in Yellowstone National Park. After each eruption, the National Park Service probides an estimate of the length of time to the next eruption. From the sample data below, find the mean and standard deviation for the time between eruptions.
98, 92, 95, 87, 96, 90, 65, 92, 95, 93, 98, 94
2. Stanford Binet IQ scores have a mean of 100 and a standard deviation of 15. Albert Einstein reportedly had an IQ of 160. Convert Einstein's IQ score to a z score.
Find the probability that a women develops breast cancer given that she has a family history of breast cancer._____________
We are interested in testing to see if the variance of a population is less than 7. The correct null hypothesis is:
Find a 90% confidence interval for the population mean weight of all such turtles.
What is the probability that no more than two of the three are commercial successes?
In study of a clinical for an allergy drug 115 of the 204 subjects reported experiencing important relief from their symptoms.
Compute a 90 percent confidence interval for the difference among the two population proportions. The CEO of the company would like to find out if Canadians.
Find out the area using Normal distribution. As, if Z is a standard normal variable find out the probability that Z lies.
In ANOVA, which of the following is not affected by whether or not the population means are equal?
Constructing a 95% confidence interval for the true length of time for all pepper seeds to germinate you must calculate the margin of error. The margin of error in this case is 0.60.
Do the association between the sizes of the heads and bodies of the two species appear to be strong? Explain.
By constructing null and alternative hypotheses, computing critical values, and comparing test statistic to critical value.
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
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