Ask question

Ask question

All categories

3 years ago

15

Use technology to help you test the claim about the population mean,

1 answer:

aliya0001 [1]3 years ago

6 0

We are given
<span>μ > 1180
</span><span>α = 0.02
</span><span>σ = 201.71
x = </span><span>1198.79
n = 200

The null hypothesis is </span>μ ≤ 1180 while the alternative hypothesis is μ > 1180
The test statistic is 1.32 which means that the confidence internval is 98%. Getting the z-score
z = (x - μ) / σ
z = (1198.79 - 1180) / 201.71
z = 0.093

For a normally distributed population, the z-score of 0.093 has a p-value of
p = 0.46

You might be interested in

Which inequalities are true? Check all that apply. Three-fifths < 0 Four-sixths greater-than one-half Nine-elevenths < 1 T

Kipish [7]

$\frac{3}{5} < 0$

$\frac{8}{16} > \frac{1}{2}\\\\$

<em><u>Solution:</u></em>

<em><u>We have to find the inequalities that are true</u></em>

<em><u>Option 1</u></em>

$\frac{3}{5} < 0\\\\0.6 < 0$

0.6 is not less than 0

Thus this inequality is not true

<em><u>Option 2</u></em>

$\frac{4}{6} > \frac{1}{2}\\\\0.667 > 0.5$

0.667 is greater than 0.5

Thus this inequality is true

<em><u>Option 3</u></em>

$\frac{9}{11} < 1\\\\0.818 < 1$

0.818 is less than 1

Thus this inequality is true

<em><u>Option 4</u></em>

$\frac{8}{16} > \frac{1}{2}\\\\$

0.5 = 0.5

Thus the above inequality is not true

6 0

3 years ago

7. A triangle has an area of 20 in². If the height of the

GenaCL600 [577]

Step-by-step explanation:

the area of a triangle is

baseline × height / 2

in our case

baseline × 5 / 2 = 20 in²

baseline × 5 = 40

baseline = 8 in

7 0

2 years ago

These are some maths gcse questions pls answer

astra-53 [7]

Answer:

The difference between 5 and a certain number is divided by 3. find the number if is equal to 7.

4 0

2 years ago

The bakery used 12 cups of sugar in their large batch of cupcakes. How many quarts of sugar is this?

trapecia [35]

Answer:

3

Step-by-step explanation:

There are 4 cups in 1 quart, so 12/4 is just 3

- yw :)

6 0

3 years ago

Read 2 more answers

Help plz thanks question 1

Varvara68 [4.7K]

-2x^2 + 500x - 350

You need to plug in the equations for C(x) and R(x) into the equation P(x)= R(x) - C(x) and solve.

6 0

3 years ago

Read 2 more answers