07/19/20

Rate x Time = Distance Question!
Albany and New York are 150 miles apart. One car left Albany heading for New York averaging 40 km/h. At the same time another car left NY heading for Albany averaging 35 km/h. How far from Albany... more
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07/19/20

The perimeter of a rectangle is 128 inches. Find the dimensions of the rectangle if 12 the length increased by 22, is 9 less than three times the width.
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07/19/20

When Mark counted the money he collected from his paper route he had $9.75 all in quarters and dimes. The ratio of dimes to quarters was 7 : 5. How many coins of each type were there?
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07/19/20

Finite Math: Probability
Assume that 37% of the voting population in the US considers themselves as Democrats. Ten of these voters are selected at random(a) What is the probability that exactly 3 of the 10 selected... more
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07/19/20

Probability: Independent Events
Let A and B be independent events with P(A) = .4 and P(B) = .2. Find P(A ∪ B).
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07/19/20

finding probability with means and standard deviation
Assume that a set of test scores is normally distributed with a mean of 82 and a standard deviation of 9. Find probabilities thata) The score is less than 77.b) The score is greater... more
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07/19/20

When will the height be 443 feet? When will the object reach the ground? 
An object is thrown upward at a speed of 181 feet per second by a machine from a height of 8 feet off the ground. The height h of the object after t seconds can be found using the... more
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07/16/20

Finite Math: Probability & Independence
Last year in Way-up-there Alaska voted for mayor with the following results: Democrat Republican Bull-Moose Party Male 12 22 21 Female 24 13 33 One of these voters is selected at random.(a)... more
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07/14/20

Can you assist with working this out
A bag contains 24 pieces of candy, of which 12 are peppermints and 12 are butterscotch. Let X be the number of peppermints in a sample of 5 pieces of candy selected at random and without... more
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07/07/20

I need help really bad please
1.We want to see if Taiwanese women with unpaid credit card debt have similar card balances as Taiwanese men with unpaid credit card debt. In a matched pair study of credit card debt, 181 women... more
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07/07/20

A certain standardized test has math Scores that are normally distributed with a mean score of 20 and a standard deviation of 3. A random sample of 9 math scores are collected. Find μ_x ̅ .

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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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