04/11/20

Suppose you calculate a 99% confidence interval of 13 to 21.05. Determine the margin of error.

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04/11/20

need help with math hw
in a​ poll, 51​% of the people polled answered yes to the question​ "Are you in favor of the death penalty for a person convicted of​ murder?" The margin of error in the poll was 2​%, and the... more
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04/11/20

Why is this work not correct ?
A student writes the equation for a line that has a slope of -6 and passes through point (2, -8).y -(-8) = -6 (x-2y -(-8) = -6x + 12y -(-8) + 8 = -6x + 12 + 8y = -6x + 20
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04/11/20

A normal population has mean 176 and a standard deviation 38. What proportion of the population is more than 185?
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04/11/20

What is the Ho and Ha? What is the test statistic (t*)?
Penn State uses thousands of BrightLight fluorescent light bulbs each year. A new manufacturer, AmpleLamp, claims that its new brand of bulbs, which cost the same as the brand the university... more
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04/11/20

What is the Ho and Ha? What is the test statistic (t*)?
A simple random sample of 15-year old boys from one city is obtained and their weights (in pounds) were collected. The sample average of the 11 boys was 154 pounds, with a sample standard deviation... more
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04/11/20

Complete the square
Complete the square fill in the number that makes the polynomial a perfect square quadraticy^2+28y+__?
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04/11/20

Word Problems on inches
a rectangular field is twice as long as it is wide. If 5 feet are taken from the width, and 4 feet taken from the length, the resultant are of the field is 180 ft. squared. what is the area of the... more
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04/10/20

standard deviation
x P(x)0 0.051 0.12 0.253 0.6Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal placesIncorrect Box 1: Enter your answer as a number (like 5, -3,... more
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04/10/20

Mathematics, statistic 150 EqualProbabilities
Suppose that X  is an event, and that P(X)=0.43 . What is P(X)  (i.e. the probability that  will not occur)?Answer = 
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04/09/20

There are 3 consecutive odd integers that sum to -57. What is the greatest of these integers?
Please answer i am struggling
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04/09/20

Mathematic, statistics 150
In the rolling of two fair dice calculate the following: P(Sum of the two dice is 4)=  .P(Sum of the two dice is 6)=  .P(Sum of the two dice is not 9)=  .P(Sum of the two dice is 5 or 10)=  .P(Sum... more
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04/09/20

Probability question.

There are 42 chocolates in a box, all identically shaped. There 16 are filled with nuts, 11 with caramel, and 15 are solid chocolate. You randomly select one piece, eat it, and then select a second... more
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04/09/20

can someone help explain how to find the exact values of the expressions without solving for x
If tan(x) = -3/4 and x is in quadrant IV, find the exact values of the expressions without solving for xsin(x/2) =cos(x/2)=tan(x/2)=
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04/09/20

Algebra question need help.

F(x)= -|x+3|-2 Give the zeros of the function if any? Please help.
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04/09/20

A rock is thrown with a height equation of h = -16t2 + 20t + 5 (where h is the height of the rock in feet at any given time of t in seconds). Will it reach a height of 30 feet? Explain your answer.
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04/09/20

math temperature
You take your tea out of the microwave and it is way too hot to drink. You don’t think to measure how hot it is until after it has been on the counter for one minute. After one minute, it is 170... more
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04/09/20

Statistics Problem
Following are prices of a random sample of 18 smart TVs sold at a particular department store with screen sizes between 46’’ and 50’’. Find the 90% confidence interval for the true mean price of a... more
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04/09/20

What is the slope of the line through (-7,-2) and (-6,7)
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04/09/20

Statistics Problem
Medication used to treat a certain condition is administered by syringe. The target dose in a particular application is 10 milligrams. Because of the variations in the syringe, in reading the... more
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04/09/20

The sum of the digits of a certain two-digit numnber is 13. The difference is -1. What is the two digit number?
i need help with this it is on solving systems
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04/09/20

Statisitics Question

Assume that a sample is used to estimate a population mean μ. Find the 95% confidence interval for a sample of size 38 with a mean of 44.3 and a standard deviation of 5.1. Enter your answer... more
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04/09/20

Parabola Question
How do I find the equation of this parabola y = ax2 + bx + cthat passes through the following points: (0,3), (1,4), (2,3) ?
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04/09/20

How would I set this type of problem up?
Jack is painting a square wall that is 10 feet long and 8 feet high. If he uses 1/4 gallon per square foot, how many gallons of paint will he need?
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04/09/20

How would I set this type of problem up?
A homeowner is planning to tile the kitchen floor with tiles that measure 9 inches by 12 inches. The kitchen floor is a rectangle that measures 9 ft by 12 ft, and there are no gaps between the... more
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