Project #32826 - Math 11

1) Which word below best fits with the following definition? - Any set of objects or individuals that are of interest and which the use of probability theory may help estimate certain characteristics.

a. Mearuse of dispersion b. measure of central tendency c.sample d.population

2)
Which word below best fits with the following definition? - A description of how spread out the data is.

a. sample b.
Mearuse of Dispersion c. population d. none of these e. Measure of Central Tendency

3) Which word below best fits with the following definition? - Items selected at random from a population and used to test hypotheses about populations.

4) If the weight of female high school students closely follows the normal distribution with a mean of 125 pounds and a standard deviation of 5 pounds, what range of weights includes the middle 80% of the girls in high school?

Select one:

5) In order to be a candidate for the R.C.M.P., recruits are given a stress test. The scores are normally distributed with a mean of 62 and a standard deviation of 8.4. If just the top 25% of recruits are selected, determine the minimum score needed.

Select one:

6) Use the z-score table in the formula sheet. What values of z give a value of 0.2327 in the table?
Select one:

7)

A study of 50 grade 11 math students found the average time spent viewing a lesson was 15.2 minutes with a standard deviation of 2.8 minutes. Find a 95% confidence interval of the mean time viewing for all lessons. (round invNorm answer to 2 decimal places for your calculations).

Select one:

8) A random sample of 400 drivers going to the United States had a mean waiting time of 45 minutes with a standard deviation of 12 minutes. Construct a 98% confidence interval for the mean arrival time for all passagers.

Select one:

9) Which of the following best describes the confidence level?

Select one:

 Subject Mathematics Due By (Pacific Time) 06/09/2014 12:45 am
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