A
names
he winner receives one of two different prizes that are randomly selected. The tree diagram
Four people enter their
represents all possible outcomes.
Rob
Sonja
Jack
T-shirt Mug T-shirt Mug
T-shirt Mug
Part A
What is the probability that Ang wins and is given a mug? Give the answer as a percent. Enter your answer in the box

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)