30 points

an ice cream parlor tracked the number of milkshakes purchased by customers over a one-month period. the data table below displays how many milkshakes were actually purchased and their expectations for the month. did the model predict the milkshake sales accurately? (assume p = 0.05)

a. yes, the x^2 value was too high.
b. no, the x^2 value was too high.
c. no, the x^2 value was too low.
d. yes, x^2 the value was too low.

Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?

Maryann’s friends loved her bulletin board, and 4 of them asked her to make one for their homes. she offered to make each of her friends a replica of her bulletin board that measures 2 meters by 3 meters. how many kilograms of burlap should maryann collect to complete the bulletin boards for her friends? maryann should collect kg of burlap.

Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant