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Question - Waking versus bedtime symptoms. As part of the study on ongoing fright symptoms due to exposure to horror films at a young age, the following table was presented to describe the lasting impact these movies have had during bedtime and waking life:
Bedtime symptoms
Waking symptoms
Yes
No
36
33
17
(a) What percent of the students have lasting waking-life symptoms?
(b) What percent of the students have both waking-life and bedtime symptoms?
(c) Test whether there is an association between waking-life and bedtime symptoms. State the null and alternative hypotheses, the X2statistic, and the P-value.
to find the sample size needed for a hypothesis test if ho mu10 ha mult10 sigma is unknown alpha 0.01 beta 0.05 and e
Compute the following .r = correlation between x and y = - 0.7 = mean of the values of x = 50.25 = mean of the values of y = 31.77 = standard deviation of the values of x = 15.85 = standard deviation of the values of y = 1.76 The slope of the leas..
a physician wants to develop criteria for determining whether a patients pulse rate is atypical and she wants to
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An elementary school principal would like to know how many hours the students spend watching TV each day. A sample of n = 25 children is selected, and a survey is sent to each child's parents.
For what proportion of patients will drug be effective for between 2 and 2.25 hours?
What is the probability that the population median will lie somewhere between the smallest and the largest values of the drawn data?
a. conduct a simple linear regression analysis of these data in which the average tuition for private colleges is
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