Biologists caught and measured 215 fish from the northern Atlantic Ocean. The lengths of the fish (in cm) are summarized in the histogram. 40 35 30 25 20 15 10 15 30 45 60 75 90 105 120 length of fish (cm) About what percentage of fish caught in this study had lengths between 45 cm and 75 cm? % Frequency -5

Suppose you are testing the null hypothesis that the slope of the regression line is zero versus the alternative hypothesis that the slope is different than zero. Would a very small P-value (i.e., less than 0.0001) indicate a strong relationship between the explanatory variable and the response variable? Yes, because the P-value will give the strength of the association between the explanatory variable and the response variable. Yes, because if the P-value is small, then r2 is large. No, because there could be a lot of scatter about the regression line, indicating a weak relationship between the explanatory variable and the response variable. No, because a large P-value would indicate a strong relationship between the explanatory variable and the response variable.

In the class poll from the beginning of the year, you were asked what color car you drive. The results are summarized below. aqua 3 beige/tan/gold 39 black 80 blue 44 green 21 orange 3  pink 1 purple 3 red 45 silver 63 white 74 yellow 1 What is the mode for this data set?

Which statistic would you use if you are interested in comparing the mean number of hours worked by sex.

What is the median? For sugary drinks

A local store owner is interested in finding the mean age of her customers. She randomly surveys 82 customers and records their age. Identify the population, sample, variable, type of variable, parameter, and statistic.

Given below are the ages of motorcyclists at the time they were fatally injured in traffic accidents (based on data from the U.S. Department of Transportation).          18   38   23   14   18   34   16  42   28           24   40   20   23   34   37   21  32   25           17   28   33   25   23   19   51  18   29 Looking at the histogram for the data, what is the height (frequency) of the 4th bar on the histogram? Given below are the ages of motorcyclists at the time they were fatally injured in traffic accidents (based on data from the U.S. Department of Transportation).          18   38   23   14   18   34   16  42   28           24   40   20   23   34   37   21  32   25           17   28   33   25   23   19   51  18   29 Looking at the histogram for the data, what is the height (frequency) of the 4th bar on the histogram? 4 7 5 6 8

A veterinarian recorded how many kittens were born in each litter. This data is summarized in the histogram below. (Note: The last class actually represents "7 or more kittens," not just 7 kittens.) QUESTIONL: What is the frequency of the litter having at most 2 kittens? (PHOTO ATTACHED)

d) Create a 99% Confidence interval for the mean. Provide a sketch of the critical value and calculate the standard error. Only for this part use o = 23.8

I need help with 5 a,b,c