True or False:

1.

If the results of a statistical analysis show that F calculated is > F critical, then the p-value will be < alpha.

2.If the results of an F-test are statistically significant, that means for the variable being measured, the variation in one of the populations is greater than the variation in the other population.

3.If the results of a statistical analysis show that F calculated is > F critical, then the p-value will be < alpha.

4.A spring (2^ndquarter) seasonal index for product sales of 1.30 means that sales for that quarter are 30% above average.

Answer the following questions;

1.A set of subjects, usually randomly sampled, selected to participate in a research study is called:

Multiple questions;

1.

A particular I.R.S. auditor collects additional money from an average of 70% of the individuals she audits. What formula would you use to find the probability that she will collect additional money from all of the next 3 separate and independently audited individuals?

P(A) = (# examples of A) (total # outcomes possible)

x - z( n) < <x + z( n)

= (f_ij e_ij)² e_ij

P (x out of n) = [n! x!(n x)!] [p^x] [(1 p)^n-x]

Quickie Express is an overnight package delivery service that delivers its packages on time 95% of the time. If you send 5 separate packages using their service, what formula would you use to determine the probability that all 5 will arrive on time?

x - t(s n) < <x + t(s n)

=b₀ + b₁x

P (x out of n) = [n! x!(n x)!] [p^x] [(1 p)^n-x]

P(A) = (# examples of A) (total # outcomes possible)

A Z score of +/-1.96 is approximately equivalent to these values on a normal distribution.

Critical region

+/- 1 standard deviation

+/- 2 standard deviations

+/- 3 standard deviations

The Westview High School nurse is interested in knowing the average height of seniors at this school, but she does not have enough time to examine the records of all the seniors. She randomly selects 25 students. She finds the sample mean (x) to be 64.5 inches and the standard deviation (s) to be 2.3 inches. Whatformula would you use to construct the 90% confidence interval for the mean?

s²= (x-x)² (n 1)

x - t(s n) < <x + t(s n)

²= (x -)² N

P (x out of n) = [n! x!(n x)!] [p^x] [(1 p)^n-x]