3 years ago

Add. 92 +53 Enter the correct answer in the box.

Mathematics

1 answer:

Alja [10]3 years ago

4 0

Answer:

145

Step-by-step explanation:

You might be interested in

A fast food restaurant executive wishes to know how many fast food meals teenagers eat each week. They want to construct a 99% c

Lana71 [14]

Answer:

The minimum sample size required to create the specified confidence interval is 2229.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What is the minimum sample size required to create the specified confidence interval

This is n when $M = 0.06, \sigma = 1.1$

$0.06 = 2.575*\frac{1.1}{\sqrt{n}}$

$0.06\sqrt{n} = 2.575*1.1$

$\sqrt{n} = \frac{2.575*1.1}{0.06}$

$(\sqrt{n})^{2} = (\frac{2.575*1.1}{0.06})^{2}$

$n = 2228.6$

Rounding up

The minimum sample size required to create the specified confidence interval is 2229.

7 0

3 years ago

The table below represents ordered pairs that satisfy the functions f(x) and g(x). A 3-column table has 4 rows. Column 1 is labe

allsm [11]

Answer:

B and D are the correct answers.

Step-by-step explanation:

9 0

3 years ago

Read 2 more answers

A board is 89 inches long how tall is it in feet and inches

Sholpan [36]

the answer is 7 feet and 5 inches

5 0

3 years ago

Liz works at the animal shelter. There are 20 animals in the shelter, and 35% of the animals are dogs. How many of the animals i

Dima020 [189]

Answer:

Step-by-step explanation:

20 • 35% = 13 20-13=7

4 0

3 years ago

What would be the best way to get an unbiased sample that represents the population for the following topic: How do people feel

timama [110]

2. random samples are the least biased samples.

4 0

3 years ago