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A student takes a calculus midterm and a history midterm. The mean and standard deviation on the calculus midterm are 58 and 15 points while they are 63 and 35 on the history midterm. Suppose she gets 78 on the calculus midterm and 78 in history.
What score in history is comparable to her calculus score?
What score in calculus is comparable to her history score?
In which course is she doing better? Enter 1 for calculus, 2 for history.
a clinical trial tests a method designed to increase theprobability of conceiving a girl. in the study 516 babies
Analysis of Variance
assume that we have two events a and b that are mutually exclusive. assume further that we know pa .30 and pb .40.a.
suppose that the hypotheses h0p.35 and hapgt.35 are to be tested. calculate the ovserved z-statistic for the sample
If we believe the manufacturer's assertion, what is the probability that at most 3 of the 6 seeds that were planted will germinate?
Average electric use was studied.a previously known population standard deviation was 450KWH. a sample of 81 houses was studied and found to have a mean of 1858 KWH. Find the 95% confidence interval for the true mean.
What is the value of 1sigma 2sigma 3sigma 4sigma 5sigma 6sigma
The sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two-sided confidence interval estimate, the lower limit would be?
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people used the new toothpaste for 6 months. The mean number of cavities at their next checkup is 1.5. In general ..
Twenty air samples were obtained and the carbon monoxide concentrations were recorded. the results in ppm (parts per million) were:
1. a researcher sends a questionnaire to 6000 individuals. she gets back 5000 responses. the percentage of women among
What is the p-value? Use a .05 level ofsignificance. What is your conclusion?
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