06/27/20

Stats homework please help

The speeds of vehicles are normally distributed , with a mean of 67 miles per hour and a standard deviation of 4 miles per hour. What vehicle speed corresponds to the 30th percentile?(a) 65.8 (b)... more
Follows • 1
Expert Answers •1

06/27/20

For the following claim answer each
. A tourist agency in Florida claims the mean daily cost of meals and lodging for a family of four traveling in Florida is $252. You want to test this claim and in a random sample of 50 families of... more
Follows • 1
Expert Answers •1

06/27/20

The number of pass attempts and passing yards for seven professional quarterbacks for a recent regular season is given.
Pass Attempts, x 583 571 550 541 506 514 486 Passing Yards, y 4770 4500 4483 4434 4328 4388 4254(a)Calculate the sample correlation coefficient and identify the type of correlation that exists if... more
Follows • 1
Expert Answers •1

06/26/20

adults with smartphones, 48​% use them in meetings. If 15 adult smartphone users are randomly​ selected, find the probability that fewer than 5 of them use their smartphones in meetings
Follows • 1
Expert Answers •3

06/26/20

Writing in mathematics

Directions: At the regional diving competition, the local team is hoping to qualify for the state championship. In today’s competition, the team must score at 53 points to qualify. The score of the... more
Follows • 1
Expert Answers •1

06/26/20

Let (-2,3) be a point on the terminal side of θ. Find the exact values of Cosθ, Cscθ, and Tanθ.
Follows • 1
Expert Answers •1

06/26/20

Probability- Normal Distribution Question- Need Help Understanding
A manufacturer knows that their items have a normally distributed length, with a mean of 16.8 inches, and standard deviation of 1 inches.If one item is chosen at random, what is the probability... more
Follows • 1
Expert Answers •1

06/26/20

Normal Distribution Question
A particular fruit's weights are normally distributed, with a mean of 614 grams and a standard deviation of 16 grams.If you pick one fruit at random, what is the probability that it will weigh... more
Follows • 1
Expert Answers •1

06/26/20

Standard Normal Distribution- Please Help
For a standard normal distribution, find:P(2.63 < z < 2.73)  (round to 3 decimal places)
Follows • 1
Expert Answers •1

06/26/20

Normal DIstribution Question- Need Help
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.6 years, and standard deviation of 0.7 years.The 10% of items with the shortest lifespan will last less... more
Follows • 1
Expert Answers •1

06/26/20

I need help with this question plz
Karine preformed the polynomial division shown below.(x^4+3x^2-x-8)/ (x+3) | 1 3 0 -1 -83 | 3 18 54 159 | _________________________ 1 ... more
Follows • 1
Expert Answers •2

06/25/20

Construct the confidence interval given: 𝑐 = .98, 𝑥̅ = 7.3, 𝑠 = .35, 𝑛 = 14, assuming the population is normally distributed.
Follows • 1
Expert Answers •1

06/25/20

help answer please

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 12 5 20 37 Female 18 4 8 30 Total 30 9 28 67 If one student is chosen at random,Find the... more
Follows • 1
Expert Answers •1

06/25/20

Stats hw please help
Suppose the average distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet. We randomly sample 49 fly balls. Let... more
Follows • 1
Expert Answers •1

06/25/20

Stats homework please help

Suppose the average distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet. We randomly sample 49 fly balls. Let... more
Follows • 1
Expert Answers •1

06/24/20

Q2 Assuming the population is normally distributed and σ is unknown find the critical value for the given information: c=.95 n=12.
Follows • 1
Expert Answers •1

06/24/20

Stats hw please help Given 𝑋~𝑁(22,5)
(a) Find 𝑥1 given 𝑧1 = −1.4(b)Find𝑥2given𝑧2 =2.5
Follows • 1
Expert Answers •1

06/24/20

Stats hw please help Given 𝑍~(0,1).
(a)Calculate 𝑃(𝑍 > 2.37)(b) Calculate 𝑃(−1.28 < 𝑍 < 1.28)(c) Find 𝑧1 given 𝑃(𝑍 < 𝑧1) = .4562
Follows • 1
Expert Answers •1

06/24/20

Suppose X~N(53,6). Use the Empirical Rule to answer the following questions.
What percent of data lies between 41 and 65?(b) What percent of data lies between 53 and 59?(c) 99.7% of data lies between 𝑥 =__________ and 𝑥 = __________.
Follows • 1
Expert Answers •1

06/24/20

Given X~N(21,4)
(a) Find the z-score for 𝑥 = 26.(b) Would 𝑥 = 10 be considered usual, unusual, or very unusual?
Follows • 1
Expert Answers •1

06/24/20

Central Limit Theorem 8.0
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 212.8-cm and a standard deviation of 0.7-cm. For shipment, 24 steel rods are bundled... more
Follows • 1
Expert Answers •1

06/24/20

Central Limit Theorem 7.0
A population of values has a normal distribution with μ=85 and σ=33.8. You intend to draw a random sample of size n=25.Find P, which is the mean separating the bottom 83% means from the top 17%... more
Follows • 1
Expert Answers •1

06/24/20

Central Limit Theorem 3.0
A population of values has a normal distribution with μ=128.6 and σ=43.9. You intend to draw a random sample of size n=119.Find the probability that a single randomly selected value is between... more
Follows • 1
Expert Answers •1

06/24/20

Find the variance of the numbers listed
What is the variance of40 39 38 32 22 19 18 15 14.9 13.5
Follows • 1
Expert Answers •1

06/24/20

Math reading problem. Rational equation.
In 2 minutes, a conveyor belt moves 300 pounds of recyclable aluminum from the delivery truck to a storage area. A smaller belt moves the same quantity of cans the same distance in 22 minutes. If... more
Follows • 1
Expert Answers •2

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.