Male and female high school students reported how many hours they worked each week in summer jobs. the data is represented in the following box plots: identify any values of data that might affect the statistical measures of spread and center. the females worked less than the males, and the female median is close to q1. there is a high data value that causes the data set to be asymmetrical for the males. there are significant outliers at the high ends of both the males and the females. both graphs have the required quartiles.

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;