A random sample of 850 high school girls showed that 400 had done ...

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A random sample of 850 high school girls showed that 400 had done strenuous exercise over the past year. The researcher wants to test the hypotheses below for p = the proportion of all high school girls who do strenuous exercise. H0: p  0.50 Ha: p < 0.50 Report the conclusion in the context of the situation.

Question 2

Imagine taking many different samples of n = 30 values from a population of resting pulse rate values. Which one of these statistics is most likely to have a sampling distribution that is approximately a normal distribution?
 a. The maximum pulse rate in a sample.
  b. The minimum pulse rate in a sample.
  c. The mean pulse rate in a sample.
  d. The mean pulse rate in the population.

[enass]

Answer to Question 1

It seems that less than 50 of all high school girls do strenuous exercise.

Answer to Question 2

C

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Thanks

[enass]

Welcome