For each probability and percentile problem, draw the picture. The time (in years) after reaching age 60 that it takes an individual to retire is approximately exponentially distributed with a mean of about 6 years. Suppose we randomly pick one retired individual. We are interested in the time after age 60 to retirement.

Government agencies keep data about the income distribution of the population. The Watson family and Baker family live in a county with 9000 families. The Watson family's Income is at the 93rd percentile. The Baker family's income is at the 44th percentile. (a) Which of the following must be true about the Watson family's Income? About 93% of the families in their county earn less than the Watson family. O The Watson family earns about 93% of the highest income in their county. O The Watson family's income is in the bottom half of incomes in their county. O The Watson family earns $93,000. (b) Which of the following must be true about the Watson family's and the Baker family's incomes? Both the Watson family and the Baker family earn more than the median income. Both the Watson family and the Baker family earn less than the median O income. O The Watson family earns more than the Baker family. O The Baker family earns more than the Watson family. Explanation Check hp X Ⓒ2022 McGraw…

R A veterinarian recorded how many kittens were born in each litter. This data is summarized in the L histogram below. (Note: The last class actually represents "7 or more kittens," not just 7 kittens.) 14 12 10- 8- 6- 4 1 2 3 4 7 8 # of kittens What is the frequency of litters having at most 3 kittens? ans = Fe Ro 1 FEB 18 P. W MacBook Air 20 000 esc F5 F6 F2 F3 F4 F1 & ! @ 1 2 4 5 Q W R %24 # 3 6 2. Frequency

A recent study evaluated how addicted teenagers become to nicotine once they start smoking. The response variable was the number of yes answers on a questionnaire called the Hooked on Nicotine Checklist (HONC). Of teenagers who had tried tobacco, the mean HONC score was 4.2 (s = 5.4) for the 149 females and 2.8 (s=4.2) for the 190 males. Complete parts a through c below. 000 DOD F4 What does the standard error indicate? A. The standard error describes the spread of the sampling distribution of x₁ - x₂. B. The standard error is the standard deviation of the difference between x₁ - x₂. OC. The standard error is the standard deviation of the sample for this study. OD. The standard error is the difference in standard deviations for the two populations. ... b. Find the test statistic and P-value for Ho: H₁ H₂ and Ha: H₁ H₂. Interpret, and explain what (if any) effect gender has on the mean HONC score. Use the significance level 0.05. The test statistic is (Round to two decimal places as…

s Activity-Chapter 3 Math 2600 2. The data below shows the percent vaccinated (for the flu) by age group (6 months to 17 years, 18 to 49 years of age, 50 - 64 years of age, and 65 years of age or older) in the United States for last year up to Feb. 2018. Answer the questions below. Reference: https://www.cdc.gov/nchs/fastats/flu.htm Vaccinated Identify the who. People vaccinated for flu, b. Which age group has the greater a. 09 percentage of those who got a flu vaccine? 65 and older. 50+ C. Which age group has the lowest 45.2 percentage of those who got a flu vaccine? 18-49yr age group 31.8 d. Approximately 48.1 million Americans are 65 years old or older. According to this value, how many 65 and older Americans actually got the flu vaccine during this time 301 201 period? Just because the 65 and older category had the greater percentage, does that also mean the 65 and older group has the most 6 mos to 17 yrs 18 to 49 yrs 50 64 yrs 65 and older Age Group people getting vaccinated?…

Healthy Eating  Americans appear to be eating healthier. Between 1970 and 2013 the per capita consumption of broccoli increased 1200.5% from 0.5 to 6.4 pounds. A nutritionist followed a group of people randomly assigned to one of three groups and noted their monthly broccoli intake (in pounds). At a=0.05 is there a difference in means? Group A           Group B         Group C 2.0                      2.0                  3.7 1.5                       1.5                   2.5  0.75                    4.0                  4.0 1.0                       3.0                  5.1 1.3                        2.5                  3.8  3.0                       2.0                  2.9 Null Hypothesis Alternative Hypothesis Find the Critical Value Find the Variance of each sample F= Make the decision Summarize Show how to use the TI-84 and Excel to work out the problems.