8,918 Answered Questions for the topic statistics

Statistics Math

10/29/24

Statistics Question: Do these results give convincing evidence that showing the picture affects people’s opinions about free health care for those experiencing homelessness?
A researcher asked 80 randomly selected people if free health care should be provided to people experiencing homelessness. Half of the respondents (40), determined at random, were shown a picture... more
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Statistics Microsoft Excel

10/27/24

Hello, I am having trouble solving for a case study of questions using Solver Add-in in Excel for Pioneer Hi-Bred
Here is the prompt: Solve for the optimal plant, area, and market production plan based on current demand as outlined in the case and supporting data file. Your final solution should include 3... more
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Statistics

10/24/24

Statistics: Binomial Probability
Sociologists say that 95% of married women claim that their husband's mother is the biggest bone of contention in their marriages (sex and money are lower-rated areas of contention). Suppose... more
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Statistics

10/24/24

Find the percent of her laps that are completed in less than 135 seconds. (Round your answer to two decimal places.)
Terri Vogel, an amateur motorcycle racer, averages 129.71 seconds per 2.5 mile lap (in a seven-lap race) with a standard deviation of 2.28 seconds. The distribution of her race times is normally... more
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Statistics

10/16/24

A certain lottery has 36 numbers. In how many different ways can 4 of the numbers be​ selected? (Assume that order of selection is not​ important.)
A certain lottery has 36numbers. In how many different ways can 44 of the numbers be​ selected? (Assume that order of selection is not​ important.)
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Statistics

10/11/24

Use a calculator to compute the following
In the binomial probability distribution, let the number of trials be n=4, and let the probability of success be p=0.2851
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Statistics

10/11/24

Use a calculator to compute the following
In the binomial probability distribution, let the number of trials be n=4, and let the probability of success be p=0.2851
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Statistics

10/11/24

Use a calculator to compute the following
In the binomial probability distribution, let the number of trials be n=4, and let the probability of success be p=0.2851
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Statistics

10/09/24

What lurking variables might be causing the increase in one or both of the variables? Explain your answer.
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Statistics

10/09/24

Stats homework question please help urgently
Suppose you are playing a game. The random variable, Y, represents your net profit in dollars. The probability distribution of Y is as follows. (Round your answers to 4 decimal places, if... more
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Statistics

10/09/24

Stats 151 homework question Please help I am struggling

Recent MLS listings of houses for sale in Edmonton show that 45% have attached garages, 15% have detached garages, and 16% have a home theatre. Additionally, 60% of houses with a home theatre have... more
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Statistics

10/09/24

Stats 151 homework question

Say you have a biased coin and you associate obtaining a head with the value 0 whereas obtaining a tail has a value of 2. Let X be the sum of the values obtained from tossing the coin three times.... more
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Statistics

10/08/24

Statistics 3.2--Probability

Research has shown that approximately 1 woman in 500 carries a mutation of a particular gene. About 67% of women with this mutation develop esophageal cancer. Find the probability that a randomly... more
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Statistics

10/07/24

DRV Probability
Suppose we have a standard deck of 52 cards (not including jokers). We are playing 5-card poker where players are handed 5 cards each. Find the average number of face cards we should expect in our... more
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Statistics

10/07/24

DRV Probability
Suppose we have a standard deck of 52 cards (not including jokers). We are playing 5-card poker where players are handed 5 cards each. Find the probability all 5 cards are black. And find the... more
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Statistics

10/06/24

Probability DRV
In a standard army corps, there is an average of 0.61 deaths by horse kick per year. Let X = the number of deaths by horse kicks for corps A in the next years. What distribution does X follow with... more
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Statistics

10/06/24

DRV Probabilities
Suppose I have a 20-sided dice. What is the probability that in 5 rolls of the dice I get a number less than 6 exactly twice?
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Statistics

10/06/24

The average teacher's salary in a particular state is $54,148. If the standard deviation is $10,210 , find the salaries according to the z-score, z=3
The average teacher's salary in a particular state is $54,148. If the standard deviation is $10,210 , find the salaries according to the z-score, z=3
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Statistics

10/06/24

Discrete Random Variables
Suppose I roll a standard 6-sided die twice. Let X = the difference in values between my 2 rolls (highest minus lowest). i.e. if I roll (4,2), then X=2, if I roll (3,3) then X=0. Create a tabular... more
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Statistics

10/05/24

CRV Distribution
I hold a length of 1m string in my hand, with the end trailing to the ground. I am blindfolded and someone cuts the string at a completely random point. Let X be the length of string still in my... more
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Statistics

10/04/24

Standard Deviation

Suppose a normally distributed set of data with 7100 observations has a mean of 188 and a standard deviation of 13. Use the 68-95-99.7 Rule to determine the number of observations in the data set... more
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Statistics

10/04/24

Standard Deviation

Suppose a normally distributed set of data has a mean of 104 and a standard deviation of 19. Use the 68-95-99.7 Rule to determine the percent of scores in the data set expected to be below a score... more
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Statistics

09/26/24

need help with homework
Nominal income refers to an income value that is not adjusted for inflation. Real income adjusts the nominal value for the rate of inflation. Real income per capita is considered a good measure of... more
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Statistics

09/26/24

having problems with practice
According to Forbes magazine, the 2023 average starting salary for new college graduates in humanities was $50,681 The average starting salary for new college graduates in engineering was $73,922... more
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Statistics

09/25/24

I need help with this problem on (Normal Probability Distribution)
Suppose that the Fort Wayne Mad Ants are playing the Cleveland Charge in a basketball game. The number of points scored in a game by the Mad Ants is normally distributed with a mean of 107  and... more
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