08/05/25

Solving system of two linear equations
Which method would you choose to solve the following system of equations? Solve it.y=2x+1 (1)3x+y=7 ​ (2)
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07/23/25

Solve for x: 7x-4=20x+2
In this problem, you are given 7x-4=20x+2. How do you solve for x?
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Expert Answers •10

07/20/25

How do I calculate the median of a data set?
I have this list: 7, 12, 14, 18, 20, 22, 25. How do I know which number is the median?
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06/25/25

If I have 3 bags and each bag has 4 apples, how many apples do I have in total?
Multiplication word problems can be confusing. How can we walk through one like: If I have 3 bags and each bag has 4 apples, how many apples do I have in total?
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02/23/23

The distribution of actual weights of wedges of cheddar cheese produced at a dairy is normal with a mean of 11.9 ounces and a standard deviation of 0.2 ounces.
(Round all answers to 4 decimal places, if needed.)(a) The probability that a randomly chosen wedge of cheddar cheese is greater than 11.83 is .(b) If a sample of 16 is randomly chosen, then the... more
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02/23/23

For which of the following scenarios is a chi-square test of homogeneity appropriate?

(A) A car manufacturer examines a random sample of 350 of the warranty claims filed over the past two years to test whether defects are randomly distributed across days of the work week. (B) A... more
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02/22/23

statistic question
Every day, Jorge buys a lottery ticket. Each ticket has a probability of 0.3 of winning a prize. After six days, what is the probability that Jorge has won at least one prize? Round your answer to... more
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02/22/23

statistic question
 A lot of 9 components contains 3 that are defective. Two components are drawn at random and tested. Let A be the event that the first component drawn is defective, and let B be the event that the... more
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02/22/23

probability question
At a certain car dealership, the probability that a customer purchases an SUV is 0.16. Given that a customer purchases an SUV, the probability that it is black is 0.32. What is the probability that... more
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02/11/23

applied reseach
1. A researcher found that the length of time for five-person student groups to reach a consensus on a sexual harassment policy at the University of Ghana has a normal distribution with mean = 2.2... more
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02/10/23

Claire and George are tasked with decorating Easter eggs.
The amount of eggs that Claire can decorate in an hour is a random variable with 𝜇� = 16 and 𝜎� = 4. The amount of eggs that George can decorate in an hour is a random variable with 𝜇� = 17... more
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02/08/23

Find the probability
Assume that when adults with smartphones are randomly​ selected, 37​% use them in meetings or classes. If 9 adult smartphone users are randomly​ selected, find the probability that exactly 6 of... more
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12/07/22

statistics hypothesis testing
 Pain medications sometimes come with side effects. One side effect is dizziness. A researcher wanted to determine if some pain medications produced more or less dizziness than others. The results... more
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11/28/22

A population has parameters μ = 71.9 and σ = 11.3 .

You intend to draw a random sample of size n = 49 . What is the mean of the distribution of sample means? μ ¯ x = What is the standard deviation of the distribution of sample means?... more
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11/17/22

find the normal distribution
The maintenance department at the main campus of a large state university receives daily requests to replace fluorecent lightbulbs. The distribution of the number of daily requests is bell-shaped... more
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11/14/22

Statistics and Probability
According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. (Round your... more
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11/13/22

A high school baseball player has a 0.174 batting average. In one game, he gets 6 at bats. What is the probability he will get at least 2 hits in the game?
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11/13/22

Central limit theorem

The amount of coffee that people drink per day is normally distributed with a mean of 17 ounces and a standard deviation of 5.5 ounces. 34 randomly selected people are surveyed. Round all answers... more
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11/10/22

statistics homework 8.2
A genetic experiment involving peas yielded one sample of offspring consisting of 448 green peas and 140 yellow peas. Use a 0.01 significance level to test the claim that under the... more
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10/27/22

 If you choose 100 vehicles at random, what is the probability that 61 or more carry just one person?
Although cities encourage carpooling to reduce traffic congestion, many vehicles carry only one person. For example, 70% of vehicles on the roads in the Minneapolis-St. Paul metropolitan area are... more
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10/27/22

For a standard normal distribution, find c if P(z > c) = 0.3732
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10/22/22

May I get help on this please?
A man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped 20 times, and the man is asked to predict the outcome in advance. He gets 18 out of 20 correct. What is the... more
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10/22/22

May I get help on this?

A quiz consists of 10 multiple-choice questions, each with 6 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing... more
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12/22/21

please help me with this problem
line passes through (4,-2) and slope 5/4 write an equation in slope intercept form
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12/22/21

____ CH4 + ___O2 → _____CO2 + __ H2O
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