05/30/22

Confidence Intervals (Sample Size)
You want to obtain a sample to estimate how much parents spend on their kid's birthday parties. Based on previous study, you believe the population standard deviation is... more
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05/30/22

please help me with math homework. the person who helped me last time got everything wrong
Construct a truth table for the compound statement. Please separate these 5 columns because squeezing them all together is confusing.(q ∧ ~p) ∨ ~q
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05/30/22

(a) state the null and alternative hypothesis, (b) select and compute the test statistic, (c) determine the critical value and the rejection region, and (d) draw a conclusion. are my answers correct?
Direction: In the following problem, (a) state the null and alternative hypothesis, (b) select and compute the test statistic, (c) determine the critical value and the rejection region, and (d)... more
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05/28/22

I don't get it, please explain
Based on a sample of 50 textbooks at the store, you find an average of 60.62 and a standard deviation of 18.4.The point estimate is:  (to 3 decimals)The 95 % confidence interval (use z*)... more
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05/26/22

Round your answer to the nearest whole number
An international company has 15,100 employees in one country. If this represents 24.7% of the company's employees, how many employees does it have in total?
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05/26/22

Find Pr(A∩B′) when Pr(A∪B)=0.8, Pr(A)=0.5 and Pr(B)=0.4
Find Pr(A∩B′) when Pr(A∪B)=0.8, Pr(A)=0.5 and Pr(B)=0.4 Find Pr(A′ ∩ B) when Pr(A ∪ B) = 0.76, Pr(A) = 0.31 and Pr(B) = 0.59
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05/25/22

probability question need help
Casey is conducting market research on the amount typically spent on the purchase of a first vehicle. Casey has determined that the average cost of a first vehicle is $7800, and that the... more
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05/20/22

Graph a line with y intercept 4 and slope 1/2
All I need is for someone to graph a line with the y intercept 4 and a slope of 1/2
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05/20/22

you have a bag of 17 marbles four are blue 6 are green 2 are red 5 are yellow what is the probablit of drawing a green marble keeping it then drawing a yellow marble
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05/20/22

Jon cut his brownie into twelfths and ate 10/12 of it .Lane cut his brownie into sixths what fraction of the brownie does lane need to eat to eat the same amount as jon?
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05/20/22

(a) state the null and alternative hypothesis, (b) select and compute the test statistic, (c) determine the critical value and the rejection region, and (d) draw a conclusion.
Direction: In the following problem, (a) state the null and alternative hypothesis, (b) select and compute the test statistic, (c) determine the critical value and the rejection region, and (d)... more
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05/20/22

Construct a scatter plot and identify the trend of data as to form, direction and trend.

Application (Performance Task)Construct a scatter plot on the problems below and identify the trend of the data as to form, direction and trend.1. A doctor collected data on how many hours children... more
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05/19/22

given the circle whose equation is (x + 4)^2 + (y - 2)^2)^2 = 136, write the equation of the tangent to the circle at point (2,12).
PLEASEREE show all work
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05/19/22

Solve the following.

Compute the value of the test statistic for each test using the given information.1. Testing Ho: p = 0.48 vs Ha: p <0.48 at a = 0.10, n = 540, p = 0.582. Testing Ho: p = 0.94 vs Ha: p > 0.94... more
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05/19/22

an equation in slope intercept form for the line that passes through (5,7) and is parallel to the line y=4/5x-6
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05/18/22

Help please, I’m so confused

Trapezoid ABCD has a height of 40ft and an area of 3140 square feet. Base 1 is 14 feet less than twice base 2. How long is base 1? 
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05/16/22

Find the 95% confidence interval for estimating the population mean μ If sample mean X = 50, sample size n= 60 and population standard deviation σ is known to be 10.
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05/13/22

What is the probability of rolling a five with two dice?
What is the probability of rolling a five with two dice?
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05/11/22

A student averages 70% on multiple choice tests. What is the probability that he misses the first 3 questions until he gets a question correct?
A student averages 70% on multiple choice tests. What is the probability that he misses the first 3 questions until he gets a question correct?
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05/10/22

What's the probability?
At a local college, 51 of the male students are smokers and 459 are non-smokers. Of the female students, 60are smokers and 540 are non-smokers. A male student and a female student from the college... more
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05/10/22

How many ways can this be done?
Three research departments have 10, 6, and 8 members, respectively. Each department is to select a delegate and an alternate to represent the department at a conference. In how many ways can this... more
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05/10/22

NEED HELP PLEASEEEEE
The dimensions of a figure are multiplied by 3, how many times larger will the volume be? 
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05/10/22

NEED HELP PLEASEEEEE
The dimensions of a figure are multiplied by 3, how many times larger will the volume be? 
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05/09/22

Estimate the true proportion with 90% confidence. Round intermediate answers to five decimal places. Round your final answer to one decimal place.
Home Internet Access In a recent year, a study found that 76% of adults ages 18–29 had internet access at home. A researcher wanted to estimate the proportion of undergraduate college... more
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05/08/22

Statistics and probability

The age of children in kindergarten on the first day of school is uniformly distributed between 4.86 and 5.78 years old. A first time kindergarten child is selected at random. Round answers to 4... more
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