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Aleksandr-060686 [28]

3 years ago

5

What would your salary each year be if you earned $5,000 per week?

1 answer:

choli [55]3 years ago

8 0

Yearly salary would be 240,000 for 5,000 and 48,000 for 1,000 a week

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James answered 84% of the test questions correctly. He answered 21 questions correctly. How many questions were on the test?

Dimas [21]

There were 25 questions. 21/25 x 100 = 84%

3 0

3 years ago

Statistics professors believe the average number of headaches per semester for all students is more than 18. From a random sampl

kompoz [17]

Complete Question

Statistics professors believe the average number of headaches per semester for all students is more than 18. From a random sample of 15 students, the professors find the mean number of headaches is 19 and the standard deviation is 1.7. Assume the population distribution of number of headaches is normal.the correct conclusion at $\alpha =0.001$ is?

Answer:

There is no sufficient evidence to support the professor believe

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 18$

The sample size is $n = 15$

The sample mean is $\= x = 19$

The standard deviation is $\sigma = 1.7$

The level of significance is $\alpha = 0.001$

The null hypothesis is $H_o: \mu = 18$

The alternative hypothesis is $H_a : \mu > 18$

The critical value of the level of significance from the normal distribution table is

$Z_{\alpha } = 3.290527$

The test hypothesis is mathematically represented as

$t = \frac{\= x - \mu }{ \frac{\sigma}{ \sqrt{n} } }$

substituting values

$t = \frac{ 19 - 18}{ \frac{1.7}{ \sqrt{15} } }$

$t = 2.28$

Looking at the value of t and $Z_{\alpha }$ we can see that $t < Z_{\alpha }$ so we fail to reject the null hypothesis.

This mean that there is no sufficient evidence to support the professor believe

3 0

3 years ago

what is the surface area of a rectangular prism with a hight of seven, length of eleven and a side length of six?

Naddika [18.5K]

Answer:

The answer is 462!!

Step-by-step explanation:

Multiply 7 x 11 x 6 and you will get your answer!!!

8 0

3 years ago

Multiply 2.19 × 43.7 = ____

makkiz [27]

Hello your correct answer would be 95.703
Have a great day if it is incorrect tell me in the comments

7 0

3 years ago

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Pls help meeeeeeeee will give BRAINLIEST

inn [45]

Answer:

It's d) 4r+13b+16

Step-by-step explanation:

Hope this helps!

8 0

3 years ago

Read 2 more answers