Is 0.9 a real number

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.

<u>First</u> we compute the $\hat{p}$ value:

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

<u>Next</u> 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

2 years ago

Help on this dccr Pleaseeeeeeee

forsale [732]

1.C
2.C
3.C
4.Written
5.Depends on your way of learning what is "compatible"
6. Written
7.582

7 0

2 years ago

If you draw a net for a cylinder, such as a soup can, how many two-dimensional geometric shapes would this net have?

Nezavi [6.7K]

Answer:

3.

If you were to “unroll” a can of soup, you would end up with two circles and one rectangle.

Thats why when you are finding the surface area of a cylinder, you need to multiply the area of the circle by 2. And also you need to find the area of the rectangle. Then you add the areas all up.

please mark me brainlies :)

I need 3 more to become an expert

6 0

2 years ago

Read 2 more answers

Please Answer, No links! reporting right away!.. giving brainliest and more points!

loris [4]

Answer:

A) 154x89 _s2

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Step-by-step explanation:

A) 154x89 _s2

sA) 154x89 _s2

s

4 0

1 year ago

Whats a synonym (another word) for the word median? *

borishaifa [10]

Another word for median is middle. The median is the middle number of a list of numbers.

7 0

2 years ago