The weight of a leatherback turtle is normally distributed with mean 760 pounds and standard deviation 98 pounds. So X ~ N(760, 98). What is the probability that a leatherback turtle will weight exactly 800 pounds?

.6591

0

.3409

1

The weight of a leatherback turtle is normally distributed with mean 760 pounds and standard deviation 98 pounds. So X ~ N(760, 98). What is the probability that a leatherback turtle will weight less than 700 pounds?

.2702

-.61

.3072

.7298

The weight of a leatherback turtle is normally distributed with mean 760 pounds and standard deviation 98 pounds. So X ~ N(760, 98). What is the probability that a leatherback turtle will weight more than 1000 pounds?

Group of answer choices

.9928

.0072

2.45

.9929

The weight of a leatherback turtle is normally distributed with mean 760 pounds and standard deviation 98 pounds. So X ~ N(760, 98). What is the probability that a leatherback turtle will weightbetween 720 pounds and 840 pounds?

Group of answer choices

.4513

-.4513

.5487

.4081

What is the probability that a t with 28 degrees of freedom will take a value of 2.048 or less?

Group of answer choices

.025

.9798

.975

.0202

Butterfinger is a candy bar created in 1923 in Chicago, Illinois by Otto Schnering, which currently is manufactured by Nestl. The Butterfinger bar consists of a crispy peanut butter core coated in milk chocolate. Each bar is advertised as weighing 60 grams and having 275 calories.

Suppose that due to imperfections in the manufacturing process not all Butterfinger bars weigh exactly 60 grams, but instead the weight of Butterfinger bars follows a normal distribution with mean 60 grams and standard deviation 1.2 grams. Use this information to answer questions 2,3,4 and 5.

Suppose we have a t-distribution with 25 degrees of freedom.Find the value of t25 such that the probability of being greater than that value is .005

.995

.4980

2.787

-2.787

Emma loves Butterfinger bars and recently ate a bar that only weighed 58 grams. Based on the distribution described to the left, what is the probability that a Butterfinger bar will weigh 58 grams or less?

0.9522

0.0478

-1.67

0.9525

Emily also loves Butterfinger bars and always hopes to get a candy bar that is as large as possible. Based on the distribution described to the left, how much must a Butterfinger bar weigh to fall in the top 1.19% of the distribution?

-2.26

2.26

62.712

57.288

Jennifer opened an odd shaped Butterfinger bar and upon weighing it realized it weighed 63.2 grams. Based on the distribution described to the left, what is the probability that a Butterfinger bar will weigh 63.2 grams or more?

2.67

.9962

.0038

.9762

Linsey loves Butterfinger bars but is cutting back on sweets, so she would prefer a smaller Butterfinger bar if given the choice. Based on the distribution described to the left, how much must a Butterfinger bar weigh to fall in the bottom 14.23% of the distribution?

61.284

-1.07

58.716

1.07