07/07/20

Statistic worksheet
1.     Of a random sample of 198 marketing students 98 rated a case of resume inflation as unethical.Based on this information, a statistician computed for the population proportion a confidence... more
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07/01/20

Confidence Interval for the mean- Need Help
Assume that a sample is used to estimate a population mean μ. Find the 95% confidence interval for a sample of size 36 with a mean of 19.3 and a standard deviation of 10.7. Enter your answer... more
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07/01/20

Need Statistics Help As Soon As Possible
Out of 400 people sampled, 176 had kids. Based on this, construct a 99% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three placesI am... more
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06/28/20

A set of 900 exam scores is normally distributed with a mean = 82 and standard deviation = 5.
A set of 900 exam scores is normally distributed with a mean = 82 and standard deviation = 5.How many students scored between 77 and 87? IncorrectHow many students scored between 72 and... more
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06/28/20

Stats homework please help

(A) Given 𝑦̂ = 51.3 + .75𝑥. Estimate the value of 𝑦 when 𝑥 = 18, considering x is in the domain of the distribution. (B) Find the P-value for the indicated hypothesis test with the given... more
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06/28/20

Stats homework please help

(a) A survey is conducted to determine if the age of a vehicle can be used to predict the fuel efficiency in mpg. Identify the explanatory variable and the response variable. (b) Find the point... more
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06/27/20

Stats homework please help
(a) Testing:H0:μ=41.1H1:μ≠41.1Your sample consists of 50 subjects, with a mean of 41 and standard deviation of 4.15.Calculate the standardized test statistic, rounded to 2 decimal places.(b)... more
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06/27/20

Stats homework please help
In a certain school district, it was observed that 32% of the students in the element schools were classified as only children (no siblings).  However, in the special program for talented and... more
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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
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06/25/20

help solve this problem
A jar contains 8 red marbles numbered 1 to 8 and 6 blue marbles numbered 1 to 6. A marble is drawn at random from the jar. Find the probability of the given event.(a) The marble is red Your answer... more
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06/24/20

(a) State the Null and Alternative (b) Is it Left-, Right-, or Two-Tailed? (c) Find the standardized test statistic. (d) What is the decision? (e) Interpret the results
1.    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... more
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06/24/20

opportunity cost
Debbie quits her job, which pays $30,000 a year, to finish her college degree. Her annual college expenses are $10,000 for tuition, $2,000 for books, and $700 for food. What is her opportunity cost... more
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06/23/20

A bag contains 9 red marbles, 7 white marbles, and 7 blue marbles. You draw 4 marbles out at random, without replacement. What is the probability that all the marbles are red?
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06/17/20

Binomial distribution

About 5% of the population has a particular genetic mutation 900 people are randomly selected find the mean for the number of people with the genetic mutation in such groups of 900
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06/16/20

Statistics Probability Question

A jar of candy contains 45 red jellybeans, 30 green jellybeans, and 60 purple jellybeans. Find the following probabilities. Q: Now suppose 6 jellybeans are selected without replacement instead.... more
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06/11/20

What is the probability that at least 6 of the balls are white?
An urn has 15 balls that are identical except that 7 are white and 8 are red. A sample of 8 is selected randomly without replacement.
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06/04/20

Determine the length of side 'a' which is the top of the trapezoid.
The area of a trapezoid is calculated to be 61.5 square units. The side length 'a' is 2x - 3 units long and side 'b' is 5x - 1 units long. The height, h, of the trapezoid is 6 units. Determine... more
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06/04/20

An equilateral triangle with side lengths (3x - 5) has the same perimeter as a square with side lengths (2x + 1). Determine the perimeter of the triangle
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06/02/20

math help please asap!!!!!!!!!!
1. A survey of the freshman class at PAW was given and the results are shown below. Complete the table and answer the given prompts. Speak a Second Language Do not Speak a Second... more
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06/02/20

part of my egents packet
Erica, the manager at Stellarbeans, collected data on the daily high temperature and revenue from coee sales.Data from nine days this past fall are shown in the table below. ... more
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05/20/20

Problems solved
Problems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solved
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05/19/20

A medicine heals 60% of the patients. 10 sick people get this medicine...
A medicine heals 60% of the patients. 10 sick people get this medicine.a) What is the probability that all 10 people are cured?b) What is the probability that at least 1 of the people is cured?c)... more
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05/18/20

Solve x^2+2x+16=0 by completing the square
Solve x^2+2x+16=0 by completing the square
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05/18/20

age of college students
Find the 90% confidence interval for the variance and standard deviation of the ages of seniors at oak park college if a sample of 22 students has a variance of 2.6 years. assume the variable is... more
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05/16/20

Card deck Probability

You pull out a card from a standard deck four times in a row, with replacement each time. Determine the probability that exactly two hearts turn up. 
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