Showing all 2 results

Sale!
A large supermarket carries four qualities of ground beef. Customers are believed to purchase these four varieties with probabilities of 0.13, 0.16, 0.13, and 0.58, respectively, from the least to most expensive variety.
$4.00$3.00Question: A large supermarket carries four qualities of ground beef. Customers are believed to purchase these four varieties with probabilities of 0.13, 0.16, 0.13, and 0.58, respectively, from the least to most expensive variety. A sample of 482 purchases resulted in sales of 46, 151, 88, and 197 of the respective qualities. Does this sample contradict the expected proportions? Use α = .05.
(a) Find the test statistic. (Give your answer correct to two decimal places.)
(b) Find the pvalue. (Give your answer bounds exactly.)
____< p < ____ 
Sale!
A program for generating random numbers on a computer is to be tested. The program is instructed to generate 100 singledigit integers between 0 and 9.
$4.00$3.00Question: A program for generating random numbers on a computer is to be tested. The program is instructed to generate 100 singledigit integers between 0 and 9. The frequencies of the observed integers were as follows. At the 0.05 level of significance, is there sufficient reason to believe that the integers are not being generated uniformly?
Integer 0 1 2 3 4 5 6 7 8 9 Frequency 12 6 8 8 14 10 6 12 13 11 (a) Find the test statistic. (Round your answer to two decimal places.)
(b) Find the pvalue. (Round your answer to four decimal places.)