12/05/22

Need help on this !!
In a survey, 12 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $36 and standard deviation of $9. Find the margin of... more
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03/13/22

Find the area of a triangle bounded by the y -axis, the line   f(x)=10-2    , and the line perpendicular to  that passes through the origin. 
Find the area of a triangle bounded by the y-axis, the line  f(x)=10-2  , and the line perpendicular to  that passes through the origin. 
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03/13/22

Draw a scatterplot
For the following table of​ data,a. Draw a scatterplot.b. Calculate the correlation coefficient.c. Calculate the least squares line and graph it on the scatterplot.d. Predict the​ y-value when x is... more
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03/06/22

Excel's NORM.S.DIST function can be used to compute
a. cumulative probabilities for a normally distributed x value b. the normally distributed x value given a cumulative probabilityc. the standard normal z value given a cumulative probabilityd.... more
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02/28/22

mean and standard error
Suppose the true proportion of voters in the county who support a specific candidate is 0.58. Consider the sampling distribution for the proportion of supporters with sample size n = 135.What is... more
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02/27/22

Please help answer
On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 107 and a standard deviation of 16. Suppose one individual is randomly chosen. Let X = IQ of an... more
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02/19/22

A professor collected data from one of her classes to investigate the relationship between study time per week

What are the least squares regression line for this data14, 25, 15, 5, 10, 12, 5, 21 GPA: 3.1, 3.7, 3.4, 3.0, 3.1, 3.3, 2.7, 3.82.Based on data what is the slope and interpret the meaning in... more
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02/19/22

A professor collected data from one of her classes to investigate the relationship between study time per week (average number of hours) and college GPA. The data or as shown is listed below
Use strapplet.com to generate needed infothe data is14, 25, 15, 5, 10, 12, 5, 21 ; GPA : 3.1, 3.7, 3.4, 3.0, 3.1, 3.3, 2.7, 3.8
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02/19/22

maxium margin error
You measure 26 dogs' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 10 ounces. Based on this, what is the maximal margin of error associated... more
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02/15/22

Given limx—>2 f(x) = -1 and limx—>2 g(x) = 4, use the limits properties and show all of the steps to find (see below)
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02/15/22

Reduce the equation to standard form, classify the surface and sketch it.
Reduce the equation to standard form, classify the surface and sketch it.4y2 + z2 - x - 16y - 4z + 20 = 0
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02/14/22

Determine the area of the region enclosed
Determine the area of the region enclosed by y=√x+3, x=−3, and y=4. Round your limits of integration and answer to 2 decimal places.The area of the encloses a region is  square units.
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02/14/22

Approximate the critical numbers of the function shown in the graph.
Determine whether the function has a relative maximum, a relative minimum, an absolute maximum, an absolute minimum, or none of these at each critical number on the interval shown. (Enter your... more
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02/12/22

If a rock is thrown upward on the planet mars with a velocity of 40 ft/s, it’s height in feet t seconds later is given by y=40t - 16t^2. Find the average velocity over the given time intervals:

Intervals continued: [2,2.1] [2,2.01] [2,2.05]
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02/12/22

I need help with this problem
f (n) =553if n is even130+1 if n is odd
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02/12/22

R(x) = – 0.01x2 + 2x + 2000, and the cost is C(x) = 0.08x + 1000. Find the marginal revenue, marginal cost, and marginal profit for a production after 55 units.

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02/08/22

(1 point) Rework problem 16 from section 2.1 of your text, involving a weighted die
(1 point) Rework problem 16 from section 2.1 of your text, involving a weighted die. For this problem, assume that all the odd numbers are equally likely to come up, all the even numbers are... more
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02/08/22

HELP NEEDED !!! DISCRETE MATHS
In the game of poker, a player receives a subset of 5 cards, called a poker hand, from the standard deck of 52 cards. The order in which the cards are received is not important, just the actual... more
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02/08/22

Discrete Maths Help ASAP
In a standard deck of cards, there are 4 suits: clubs, diamonds, hearts, and spades. Each suit contains 13 cards: 2, 3,…,10, Jack, Queen, King, Ace. So there are 4 * 13=52 cards in the deck.A... more
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02/07/22

10.4 Homework MAT 210
Calculate the average rate of change of the given function f over the intervals [a, a + h] where h = 1, 0.1, 0.01, 0.001, and 0.0001. (Technology is recommended for the cases h = 0.01, 0.001, and... more
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02/06/22

A random sample of 390 married couples found that 290 had two or more personality preferences in common.
A random sample of 390 married couples found that 290 had two or more personality preferences in common. In another random sample of 558 married couples, it was found that only 38 had no... more
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02/06/22

Logistic Problem
It is of considerable interest to policy makers to model the spread of information through a population. For example, various agricultural ministries use models to help them understand the spread... more
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02/05/22

For what values of x does the graph of f(x) = x + 2 sin x have a horizontal tangent?
Must only be the smallest positive value of x
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02/05/22

linear regressions
A mathematics teacher wanted to see the correlation between test scores and homework. The homework grade (x) and test grade (y) are given in the accompanying table. Write the linear regression... more
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02/01/22

Statistics help!
We want to test Ho: µ=50 against Ha: µ<50.Significance level = 10%Population standard deviation = 20random sample size = 30What is the power of the test if the true mean µ = 40?What is the... more
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