Jon S.

Statistics Probability Normal Distribution

08/22/21

Continuous Probability Distributions (Standard Normal Distribution) question: If the daily consumption of the average person follows a normal distribution that consists of the following..

If the daily consumption of the average person follows a normal distribution that consists of the following: 3.58 (mean), 1.04 litres (standard deviation)How many litres do 67.72 percent of... more

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Math Statistics

08/21/21

Study Guide for final Exam

(10) According to government data, the probability that an adult was never in a museum is 15%. A random sample of 25 adults were surveyed. What is the probability that exactly three adults were... more

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Math Statistics

08/21/21

Study Guide for final exam

4. (8) Women’s heights are normally distributed with mean 63.6 in. and standard deviation 2.5 in.a. (4)Find the probability that a randomly selected woman has a height that greater than 61 in.b.... more

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Geometry

08/17/21

what is the distance (-4,5) and (4,0) to the nearest hundredth

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Elementary Math

08/17/21

sequence of black balls and white balls.

Following is a sequence of black balls and white balls. How many black balls are needed for the 100th term?

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Statistics

08/17/21

Confidence Interval Help!!!

In a survey, 23 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $50 and standard deviation of $7. Construct a... more

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Math Statistics Mathematics

08/17/21

Does the confidence interval support that more than 50% of Americans approve of Trump? Why or why not?

A recent Gallop poll showed Trump’s approval rating 40% with a margin or error of 3%. a) Find the confidence interval. c) Does the confidence interval support that more than 50% of Americans... more

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Algebra 1 Algebra 2 Precalculus

08/16/21

Find the equation of an ellipse whose foci are (0,±6) and whose semi-minor axis is 5

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Statistics Discrete Math Probability

08/16/21

Law of Variance question: If V (Y) = 12, then V (4Y - 8) :

If V (Y) = 12, then V (4Y - 8) ?

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Math Statistics

08/15/21

i do not know P(M > 30.8) = please help me

A population of values has a normal distribution with μ=23.6 and σ=16. If a random sample of size n=24 is selected, Find the probability that a single randomly selected value is greater than... more

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Math Statistics

08/15/21

If 36 bottles are randomly selected, find the probability that the mean content is less than 102.1 mL

8. Suppose the amount of a popular sport drink in bottles leaving the filling machine has a normal distribution with mean 101.5 milliliters (mL) and standard deviation 1.6. If 36 bottles are... more

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Precalculus

08/12/21

Given F(x)=x^2+7x-6 ,evaluate. F(-7)

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Statistics

08/12/21

How do I get to the answer?

Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 415 drivers and find that 302 claim to always... more

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Algebra 2

08/11/21

Calculate the standard deviation using the given information. Round the answer to one decimal place.

s2 = 330

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Statistics Statistics Stats

08/10/21

21.7: Find a 95% confidence interval for this difference and interpret it in context.

In analyzing the city and highway fuel efficiencies of many cars and trucks, the mean difference in fuel efficiencies for the 632 vehicles was 7.36 mpg with a standard deviation of 2.59 mpg. Find... more

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Statistics Statistics Stats

08/10/21

7.10: What fraction of the variability in potassium is accounted for by the amount of fiber that servings contain?

The correlation between a cereal's fiber and potassium contents is r=0.904. What fraction of the variability in potassium is accounted for by the amount of fiber that servings... more

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Geometry

08/09/21

Can someone please help me with this Geometry problem? I would really appreciate it!

What is the volume, in cubic centimeters, of a tetrahedron, a regular triangular pyramid where all faces are congruent, with a base area of 5.4 square centimeters and a height of 2.95 centimeters.

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Calculus Statistics Statistics

08/09/21

7.10: What fraction of the variability in potassium is accounted for by the amount of fiber that servings contain?

The correlation between a cereal's fiber and potassium contents is r=0.892. What fraction of the variability in potassium is accounted for by the amount of fiber that servings... more

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Geometry

08/09/21

Can someone please help me with this Geometry question?

Question: A person on top of a 44-meter water tower sees a car below. If the angle of depression between the top of the water tower to the car below is 30°, how far, in meters, is the person from... more

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Statistics Statistics Stats

08/08/21

Find the probability of each event described. Complete parts a through d below.

The soccer team's shirts have arrived in a big box, and people just start grabbing them, looking for the right size. The box contains 6 medium, 11 large, and 9 extra-large shirts. A player... more

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Statistics Statistics Calc

08/08/21

If he leaves class late, there is a 46% chance that he will miss his train. What is the probability that he gets out of class late and misses the train?

A student figures that he has a 51% chance of being let out of class late. If he leaves class late, there is a 46% chance that he will miss his train. What is the probability that he gets out of... more

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Statistics Statistics Stats

08/08/21

13.2: What is the probability that a randomly selected person in the country enjoys cooking or shopping or both?

Fifty-four percent of people in a certain country like to cook and 52% of people in the country like to shop, while 22% enjoy both activities. What is the probability that a randomly selected... more

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Statistics Statistics Statistic

08/08/21

13.1: Suppose that 20% of people have a dog, 32% of people have a cat, and 8% of people own both. What is the probability that someone owns a dog or a cat?

Suppose that 20% of people have a dog, 32% of people have a cat, and 8% of people own both. What is the probability that someone owns a dog or a cat?The probability of a person having a dog... more

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Calculus Statistics Statistics

08/08/21

14.3: What are the mean and standard deviation of his total weekly salaries?

An employer pays a mean salary for a 5-day workweek of $1050 with a standard deviation of $136. On the weekends, his salary expenses have a mean of $350 with a standard deviation of $60. What... more

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Statistics

08/08/21

statistic and probability

A tube light producer company claims that 80% of the tube lights manufactured by ithave life time more than 2 years. The consumer forum thinks that the percentage isless. The survey conducted by... more

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Continuous Probability Distributions (Standard Normal Distribution) question: If the daily consumption of the average person follows a normal distribution that consists of the following..