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2 years ago

Use these tables to answer questions 1 – 3. The tables give the prices of kayak rentals from two different companies.

Mathematics

1 answer:

Irina18 [472]2 years ago

3 0

Answer:

For the raging river you multiply

X * 9 = Y

And for paddlers the equation is

X + 40 = Y

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In a survey of 603 adults, 98 said that they regularly lie to people conducting surveys. Create a 99% confidence interval for th

marysya [2.9K]

Answer:

The population proportion is estimated to be with 99% confidence within the interval (0.1238, 0.2012).

Step-by-step explanation:

The formula for estimating the population proportion by a confidence interval is given by:

$\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}$

Where:

$\hat{p}$ is the sample's proportion of success, which in this case is the people that regularly lie during surveys,

$z_{\alpha /2}$ is the critical value needed to find the tails of distribution related to the confidence level,

$n$ is the sample's size.

First we compute the $\hat{p}$ value:

$\hat{p}=\frac{successes}{n}=\frac{98}{603}=0.1625$

Next we find the z-score at any z-distribution table or app (in this case i've used StatKey):

$z_{\alpha /2}=2.576$

Now we can replace in the formula with the obtained values to compute the confidence interval:

$\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}=0.1625\pm 2.576\times\sqrt{\frac{0.1625\times(1-0.1625)}{603}}=(0.1238, 0.2012)$

5 0

3 years ago

Go step by step to reduce the radical. √216

iris [78.8K]

Answer: 6√6

Step-by-step explanation:

√216=

√(36*6)=6√6

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1 year ago

Who is good at geometry and willing to answer my questions? The reward: 50 pts.

blsea [12.9K]

Answer:

Step-by-step explanation:

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3 years ago

An engineer studying fuel usage collected data on the speed a car traveled (in kilometers per hour) and how much fuel it used (i

Flura [38]

Answer:

c u m and p i s s

Step-by-step explanation:

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2 years ago

What is the solution to the following system of equations?

Semmy [17]

Answer:

(3,2)

Step-by-step explanation:

The system is

x + y = 5

x -y = 1

Add the equations to eliminate y

2x = 6----->x=3

Substitute this value in any equation

3+y = 5----->y=2

The solution is (3,2)

3 0

3 years ago