Mathematics, 01.03.2021 21:50 kaitlynn73
About 10% of people in the United States do not wear a seat belt. Suppose we take a random sample of 180 U. S. residents, and let X - the
number of people who do not wear their seat belt.
(a) Calculate the mean and standard deviation of the sampling distribution of X. Be sure to show the formulas that you used in your
calculations.
(b) Interpret the standard deviation.
c) Justify that the distribution of X is approximately normal.
Answers: 1
Mathematics, 21.06.2019 15:00, Ruby2480
Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52
Answers: 1
Mathematics, 21.06.2019 22:30, dancer4life5642
Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm
Answers: 1
About 10% of people in the United States do not wear a seat belt. Suppose we take a random sample of...
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