03/31/20

test statistic question

Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 561randomly selected adults showed that 65​% of them would erase all of their... more
Follows • 1
Expert Answers •1

03/31/20

Find a formula for the nth term of the arithmetic sequence
First term: 1 common difference: 4
Follows • 1
Expert Answers •1

03/31/20

The square of a number minus twice the number is four times the number
Follows • 1
Expert Answers •1

03/31/20

Please Help! Pre-Calculus and Trigonometry.

Give exact values. Both in degrees and radians. tan2x - 1 = 0
Follows • 1
Expert Answers •1

03/31/20

Please Help! Pre-Calculus and Trigonometry.
Give the exact values of sin2x, cos2x, and tan2x. sin x = 3/5, pie/2 ≤ x < pie
Follows • 1
Expert Answers •1

03/30/20

Please Help! Pre-Calculus and Trigonometry.

cos a = - 12/13, quadrant II, sin B = 1/2, quadrant II. Find cos (a-B).
Follows • 1
Expert Answers •1

03/30/20

The sum of a number and its multiplicative inverse is negative two
Follows • 1
Expert Answers •2

03/30/20

How much paint would be needed?
If 3/4 gallon of paint covers 250 square feet of wall space, how much paint would be needed for a room with 510 square feet of wall space? 
Follows • 1
Expert Answers •1

03/30/20

Use the table of z-scores to find the percentage of data items in a normal distribution that lie in the given range.

a. above z= -0.9b. below z= -0.9c. between z= .4 and z= 1.4d. above z= -1.86e. below z= 2.43f. between z= 1.94 and z= 2.87
Follows • 1
Expert Answers •2

03/30/20

Two number cubes
Two number cubes are labeled one through 6. What is the probability of rolling a 2 or 4 on the first cube and a 5 on the second cube?
Follows • 1
Expert Answers •1

03/30/20

Math problem help

After a person in Kansas travels 7 miles north, then 3 miles east, and finally 3 miles south, how far is the person from the starting point?show work to help thanks!!
Follows • 1
Expert Answers •1

03/30/20

Math problem help!!
A ladder is 4.0m long. The bottom of the ladder is placed 0.8m from the wall l. How high up on the wall will the ladder reach?please show work to help me! Thanks
Follows • 1
Expert Answers •1

03/30/20

Help on this math question

The circumference of a circle is 20π ft. What is the exact area?show work to help thank you!!
Follows • 1
Expert Answers •1

03/30/20

Circle P has a center of (2,3). Circle P contains the point (4,6). What is the equation of Circle P?
Circle P has a center of (2,3). Circle P contains the point (4,6). What is the equation of Circle P?
Follows • 2
Expert Answers •2

03/30/20

Statistics Question
If random samples, each with n = 9 scores, are selected from a normal population with μ = 80 and σ = 18, and the mean is calculated for each sample, then the average of all the sample means would... more
Follows • 1
Expert Answers •2

03/29/20

normal distribution statistics question
A manufacturer knows that their items have a normally distributed length, with a mean of 14.8 inches, and standard deviation of 0.9 inches.If 16 items are chosen at random, what is the probability... more
Follows • 1
Expert Answers •2

03/29/20

I need help with a z scores!!
The probability that a single randomly selected bear in your sample would weigh between 200 and 300 pounds. with standard deviation of 107 and the mean of... more
Follows • 1
Expert Answers •1

03/28/20

A building has 6 entrances. 4 people were about to enter the building. Many ways that can be taken so that they can enter the building using different doors are...A.10, B.24, C.256, D.324, E.360

I have never seen these types of Questions. I will appreciate if someone could help me :)
Follows • 1
Expert Answers •1

03/28/20

Confidence interval estimate
Twelve different video games showing substance use were observed and the duration times of game play​ (in seconds) are listed below. The design of the study justifies the assumption that the sample... more
Follows • 1
Expert Answers •1

03/27/20

Probability question
Assume the population of human body temperatures has a mean of 98.6 F and a standard deviation of 0.62 F. Suppose we randomly select a sample size of n= 106. What is the probability the mean body... more
Follows • 1
Expert Answers •1

03/27/20

why is statistics soo hard ?
The height of women ages​ 20-29 is normally​ distributed, with a mean of 64.264.2 inches. Assume σ=2.52.5 inches. Are you more likely to randomly select 1 woman with a height less than 65.865.8... more
Follows • 1
Expert Answers •1

03/24/20

If n=540 and ˆ p p ^ (p-hat) =0.23, find the margin of error at a 99% confidence level Give your answer to three decimals
Follows • 1
Expert Answers •1

02/20/20

Math word problem
Mike has 640 red and blue marbles. if he has three times as many red marbles as blue marbles, how many red marbles does he have?
Follows • 1
Expert Answers •1

02/18/20

how do i solve this ?
a regular decagon has side lengths measuring 4.5 ft, then the perimeter is  ft.
Follows • 1
Expert Answers •1

02/18/20

Richard and Teo have a combined age of 41. Richard is 8 years older than twice​ Teo's age. How old are Richar
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.