Three questions answer all: )
a book store owner randomly samples 100 customers on two separate days to see what their favorite type of book is. the data shows the results of the two samples.

question 1
mystery sports history total
day 1 38 27 35 100
day 2 42 24 34 100
the book store owner expects 850 customers.

based on the samples, about how many mystery books will the book store sell?

enter your answer rounded to the nearest whole number in the box

question 2
a pet store surveyed three groups of 5 customers to find out how many pets the customers owned. the table shows the results of the three samples.

survey number of pets
group 1 {1, 3, 2, 2, 3}
group 2 {6, 5, 7, 3, 4}
group 3 {2, 3, 1, 1, 4}
identify surveys that are likely biased. based on the unbiased surveys, estimate the mean number of pets that the customers own.

enter your answer in the box. round to the nearest whole number

question 3
a sporting goods store randomly sampled three groups of 100 customers on what their favorite spectator sport is. the data shows the results of the three samples.

baseball basketball football total
group 1 27 28 45 100
group 2 26 28 46 100
group 3 30 26 44 100

the sporting goods store has 1225 customers one weekend.

based on the samples, what is a reasonable estimate of the number of people who will prefer to watch football?

enter your answer rounded to the nearest whole number in the box