The first quartile of these scores is A. 5.2 B 7.5 C. 7.3 D. 9.3 Suppose you wis

Question

The first quartile of these scores is A. 5.2 B 7.5 C. 7.3 D. 9.3 Suppose you wish to estimate a population proportion p based on sample of n observations. What sample size is required if you want your estimate to be within 0.04 of p with 95% confidence? A. 952 B. 523 C. 600 D. 1329 The variable students weight is an example of variable. A. Qualitative B. Discrete C. Continuous D. None If Z is a standard normal random variable, the area between z = 0.0 and z = 1.50 compared to the area between z = - 1.5 and z = 0 will be A. The same B. larger C. smaller D. None If the grades of female students x is normally distributed with a mean equal to 62 and a variance equal to 16, then P(x

Explanation / Answer

Question 10:

The first quartile score for sample size n is the (n/4)th score of the given data.

Here n=40, therefore the 10th score would be the first quartile score.

from the given data we observe that 7.3 is the 10th score in the data

Therefore c) 7.3 is the correct answer here.

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