Tom K.

A cones circular base has a radius of 20 feet. The volume of the cone is 1990 cubic feet. What is the approximate height of the cone? A. 4.75 feetB. 19.2 feetC. 1.58 feetD. 9.51 feet

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Calculus

04/27/20

Use the integration capabilities of a graphing utility to approximate the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis.

y=√3xy=x2Round to 4 decimal places.I have gotten 5.882 and 1.8721. I only get one more try on the homework. I just can't figure it out.

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Probability

04/27/20

A hand consists of 5 cards dealt from a standard deck of 52 cards. order of the cards doesn't matter. Determine the probabilities for a 5-card poker hand. in percent form, rounded to 4 decimal places.

Determine the probability that exactly 3 of these cards are Aces.Determine the probability that all five of these cards are Spades.Determine the probability that exactly 3 of these cards are face... more

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Math Statistics

04/25/20

How do I construct a confidence interval?

In a survey I conducted of 40 U.S. adults (age 18 and over), 95% of them said they spent more than 4 hours on their phones daily. My claim for this study is "I believe more than 75% of individuals... more

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Statistics

04/25/20

Binomials and random variables

We believe that 95% of the population of all Calculus I students consider calculus an exciting subject. Suppose we randomly and independently selected 20 students from the population. If... more

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Statistics Population Standard Deviation

04/25/20

Is there enough evidence, at the α = 0.05 level of signiﬁcance, to suggest the standard deviation is not 3.1 ounces?

A manufacturer of soda fountain machines claims its machine dispense liquid with a standard deviation of 3.1 ounces. A random sample of 20 machines found the standard deviation to be 4.6 ounces. Is... more

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Trigonometry

04/25/20

Write the trigonometric form of the complex number for −8(1 + \sqrt{3} i)

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Trigonometry

04/25/20

Find cos(s + t) given that cos s = (1/3), with s in quadrant I, and sin t = - (1/2), with t in quadrant IV.

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Calculus

04/24/20

A box of rectangular base and an open top has a surface area 600 cm2. If the height of the box is equal to its width, find the dimensions that give a maximum volume.

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Statistics

04/24/20

statistics and economics

A student has to take 9 more courses before he can graduate. If none of the courses are prerequisite to others, how many groups of four courses can he select for the next semester?

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Math Calculus Precalculus

04/24/20

look at description for questions...

a spring models a sinusoidal function and rests 1.8 m above the ground. A mass on the spring is pulled 1m below its resting point and released, it takes 0.5 seconds to move from the minimum... more

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Math Precalculus

04/24/20

given that tan θ= -8/15 and θ is in quadrants 2, find: sin2 θ, cos2 θ, and tan2 θ

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Statistics

04/24/20

Find the probability of no correct answers.

Assume that random guesses are made for 5 multiple-choice questions on a test with 5 choices for each question, so that there are n=5 trials, each with probability of success (correct) given by... more

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Statistics

04/24/20

Need help with this stats question

Find the critical t-value that corresponds to 99%confidence and n=10A)2.821.B)1.833C)3.250D)2.262***this is a multiple choice question

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Sat Math

04/21/20

the senate in a certain state is comprised of 54 republicans 44 democrats and 2 independents. how many committees can be formed if each committee must have 3 republicans and 2 democrats

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Answers •2

Probability Maths

04/19/20

Prove that sample variance is not an unbiased estimator of population variance

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Answers •1

Statistics

04/19/20

Statistics 3301

Suppose the manager of a shoe store wants to determine the current percentage of customers who are males. How many customers should the manager survey in order to be 95% confident that the... more

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Algebra 2

04/17/20

PLEASE ANSWER!!

Convert 410 degrees to radians convert 5pi over 4 to degrees

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Discrete Math Discrete Mathematics

04/17/20

Let n ∈ Z. Prove if n − 2 is even, then 3n 2 + 5 is odd.

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Algebra 1 Algebra

04/16/20

Algebra please help!

Bobby and his friends were planning their trip to a water park. The park offers 13 total rides including 4 lazy rivers. If Bobby randomly chooses to go on 4 of the rides, what is the probability... more

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Statistics

04/15/20

Flipping a biased coin and finding the covariance and correlation

You flip a biased coin 15 times, independently. The coin has probability p of being a heads. Let X be the number of heads in the first 10 coin flips and Y be the total number of heads in the last... more

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Probability

04/10/20

Now suppose that you play a game in which you roll 100 dice, and the payoff is the total number of dots showing on all the dice. What is the variance of this game?

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Geometry question

What number is 2/5 of the distance from 4+1/7 to 10?

FInd the inverse thanks in advance

Geometry Homework

Use the integration capabilities of a graphing utility to approximate the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis.

A hand consists of 5 cards dealt from a standard deck of 52 cards. order of the cards doesn't matter. Determine the probabilities for a 5-card poker hand. in percent form, rounded to 4 decimal places.

How do I construct a confidence interval?

Binomials and random variables

Is there enough evidence, at the α = 0.05 level of signiﬁcance, to suggest the standard deviation is not 3.1 ounces?

Write the trigonometric form of the complex number for −8(1 + \sqrt{3} i)

Find cos(s + t) given that cos s = (1/3), with s in quadrant I, and sin t = - (1/2), with t in quadrant IV.

A box of rectangular base and an open top has a surface area 600 cm2. If the height of the box is equal to its width, find the dimensions that give a maximum volume.

statistics and economics

look at description for questions...

given that tan θ= -8/15 and θ is in quadrants 2, find: sin2 θ, cos2 θ, and tan2 θ

Find the probability of no correct answers.

Need help with this stats question

the senate in a certain state is comprised of 54 republicans 44 democrats and 2 independents. how many committees can be formed if each committee must have 3 republicans and 2 democrats

Prove that sample variance is not an unbiased estimator of population variance

Statistics 3301

PLEASE ANSWER!!

Let n ∈ Z. Prove if n − 2 is even, then 3n 2 + 5 is odd.

Algebra please help!

Flipping a biased coin and finding the covariance and correlation

Now suppose that you play a game in which you roll 100 dice, and the payoff is the total number of dots showing on all the dice. What is the variance of this game?

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