In a random sample of 500 people age 20 -24, 22% were smokers. In a random sample of 450 people age 25-29, 14% were smokers test the claim that the Proportion of smokers in the two age groups is the same use a significance level of 0.01property

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?

I6.8.4 test lucas took out a car loan for $14,475 that has a 0% apr for the first 16 months and will be paid off with monthly payments over 5 years. for how many months will lucas be charged interest?