12/31/22

getting confused

We want to conduct a hypothesis test of the claim that the population mean germination time of strawberry seeds is different from 18.1 days. So, we choose a random sample of strawberries.... more
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12/31/22

I want to confirm if my answer is correct
1- The records of a computer retail store show that out of the 100   customers who purchased a desktop computer last month, all but  28  also purchased a service plan that extends the... more
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12/31/22

math statistic mat205
- Consider a t distribution with 9  degrees of freedom. Compute  P≤t−1.4 . Round your answer to at least three decimal places.P(t≤−1.4 )= (b)Consider a t distribution with 16  degrees of freedom.... more
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12/31/22

Which of these salts contains the greatest % of X by mass? XF XF2 or X2F3

explain which one and why
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12/29/22

What are 3 cosecutive integers in which three times the first is 9 more than twice the last
Find 3 consecutive integers such that 3 times the first is 9 more than twice the last
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12/28/22

How do I form an exponential function with a set of data

I'm working on a project to do with exponential function and I'm trying to extrapolate a set of data to find the variables needed for the analysis of the experiment (the goal of which is to compare... more
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12/27/22

Name the product at each electrode when these solutions are electrolysed using inert electrodes
A concentrated solution of magnesium chloride
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12/25/22

Calculus FRQ AP Practice Question
Water is flowing into and out of a small reservoir so that the total amount of water can be modeled by R, where 𝑅(𝑡) = 20 − 15sin( 𝑡^2/25) cubic feet, t is measured in hours, and 0 ≤ t ≤ 8. Show... more
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12/23/22

true or false integral area question

Using the Trapezoidal Rule with a step size of 0.5, an approximation for the integral . true or false
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12/21/22

Differential equations

Find the integrating factor and solve the given differential equation :(x²y² + xy + 1) dx + (x²y² - xy + 1) dy=0
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12/21/22

solve the differential equation 1/x dy/dx = - \sqrt xy
solve the differential equation 1/x dy/dx = - \sqrt xy and give answer in terms of y(x)
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12/20/22

For this reaction: C8H18 (g) + 25O2 (g) → 16CO2 (g) + 18H2O (g). How many grams of CO2 are emitted when 5.0 x 102 g of pure octane, (C8H18), is combusted
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12/19/22

the probability mass function of a random variable X is given by pr(x)=cµ^2/x! x=1,2,3.where µ is some positive value .find the constant c. (1)p(x>2) .(2)pr(x=0)

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12/18/22

The area that lies between z=-1.08 and z=- 1.53
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12/18/22

Im not sure how to answer this....
The table below shows one doctor's patients who got the flu and whether or not they took a vitamin each day. Got the flu Did not get the flu Totals Took Vitamin 25 35 60 Did not take... more
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12/17/22

Thermal Properties of Matter
A welder using a tank of volume 0.075m ^ 3 fills it with oxygen (molar mass 32g / mol ) at a gauge pressure of 3.00 x 10 ^ 5 Pa and temperature of 37.0°C. The tank has a small leak, and in time... more
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12/17/22

Probability Help!
The level of cholesterol in the blood for all men aged 20 to 34 follows a Normal distribution with mean 𝜇𝑀=188μM=188 milligrams per deciliter (mg/dl) and standard deviation 𝜎𝑀=41σM=41 mg/dl. For... more
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12/14/22

Determine the time necessary for P dollars to double when it is invested at interest rate r compounded annually, monthly, daily, and continuously.
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12/14/22

Optimizing application of derivative
g(t) = t/t-1 on [3,5] find the absolute minimum and maximun
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12/14/22

probability help
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two... more
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12/14/22

finding volume of the below question
Find the volume bounded by z= 2x, z= y, inside x^2 + y^2 =1 above the xy-plane.
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12/13/22

What would be the student weight 1 radius away from the earth surface, 2 radii away?  3 radii away.  Calculate g at each altitude
Calculate the weight of a student that weighs 154 lbs in newton.  what would be the student weight 1 radius away from the earth surface, 2 radii away?  3 radii away.  Calculate g at each altitude.
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12/13/22

Statistics and Probability - tossing a coin
Two fair coins are to be tossed and the outcome is the ordered pair (face on the first coin, face on the second coin). Let the face “tail” be denoted by T and let the face “head” be denoted by H.... more
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12/12/22

Chemistry - Quantities

For the unbalanced equation shown below, if the reaction of 91.3 grams of C3H6 produces a 81.3% yield, how many grams of CO2 would be produced?_C3H6 + _O2 → _CO2 + _H2O
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12/12/22

What is the impulse on a 45,000 kg airplane when it changes its velocity from 242 m/s to 258 m/s?
720,000 kg·m/s2,800 kg·m/s16 kg·m/s440,000 kg·m/s
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