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3 years ago

A scuba diver dove 18 ft below the

Mathematics

2 answers:

Vlada [557]3 years ago

6 0

Answer:

42 ft

Step-by-step explanation:

18 plus 24 equals 42 feet

Setler79 [48]3 years ago

5 0

Hello!

Let's start from the very beginning. He starts at sea level. This would make his elevation 0 feet.

Then, he dives 18 feet downwards. This would decrease his elevation by 18 feet, making it 18 feet below sea level.

Finally, he dives 24 feet downwards. This would decrease his elevation by another 24 feet. 24 feet below 18 feet below sea level would be 42 feet below sea level, as -18 - 24 = -42.

Therefore, your final answer is 42 feet below sea level.

Hope this helps!

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3 years ago

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3 years ago

A simple random sample of 50 items from a population with 7 resulted in a sample mean of 35.

Vilka [71]

The 90% , 99% confidence interval for the population mean is 32.145 < $\rm \mu$ < 35.855 and 31.093 < $\rm \mu$ < 36.907

<h3>What is Probability ?</h3>

Probability is the study of likeliness of an event to happen.

It is given that

Total Population = 50

Mean = 35

The confidence interval is given by

$\rm CI = \mu + z \dfrac{s}{\sqrt n}$

$\rm \mu$ is the mean

z is the confidence level value

s is the standard deviation

n is the population width

(a) The 90% confidence interval for the population mean

90% $\rm \alpha / 2$ = 0.05

Z = 1.64

34 $\rm \pm$ 1.64 * 8 / √50

34 $\rm \pm$ 1.855

32.145 < $\rm \mu$ < 35.855

(b) The 99% confidence interval for the population mean

99% $\rm \alpha / 2$ = 0.005

Z=2.57

34 $\rm \pm$ 2.57 * 8 / √50

34 $\rm \pm$ 2.907

31.093 < $\rm \mu$ < 36.907

Therefore the confidence interval for population mean has been determined.

The complete question is

A simple random sample of 50 items from a population width =7 resulted in a sample mean of 35. If required, round your answers to two decimal places.

a. Provide a 90% confidence interval for the population mean

b. Provide a 99% confidence interval for the population mean

To know more about Probability

brainly.com/question/11234923

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8 0

2 years ago

Please help :):):):):):):):......

Gelneren [198K]

13+13=26
9+9=18
18+26=44

Hope this helps :)

3 0

3 years ago

Read 2 more answers

Solve the Equation |x-8|=16

choli [55]

|x-8| = 16
⇒ x-8= 16 or x-8= -16
⇒ x= 16+ 8 or x= -16+ 8
⇒ x= 24 or x= -8

Final answer: x= 24 or x= -8~

4 0

3 years ago

Read 2 more answers