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inna [77]
3 years ago
11

HELP QUICK PLEASE!!!

Mathematics
1 answer:
baherus [9]3 years ago
6 0

Answer:

1, 4 nope 2, 3 yep

Step-by-step explanation:

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You start hiking at an elevation that is 80 meters below base camp.
Arte-miy333 [17]

Answer:

You are now 38 m below base camp.

Step-by-step explanation:

Consider the provided information.

You start hiking at an elevation that is 80 meters below base camp.

Now your initial location is 80 m below base camp, that can be represents as: -80

Now you increase your elevation by 42.

So you go up by 42.

In other words, you get the equation -80+42 = -38.

Since a negative value is below the base camp, this means that you are now 38 m below base camp.

6 0
2 years ago
A professor records the difference between the marks scored by the students in the class test last week and those scored in the
dezoksy [38]

Answer: (10.82\ , 13.18)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\mu\pm\ z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 35  , large sample (n>30)

Mean difference : \overline{x}=12

Standard deviation : \sigma=3

Significance level : \alpha=- 1-0.999=0.001

Critical value : z_{\alpha/2}=z_{0.0005}=3.4807567

Now, the 99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students will be :-

12\pm\ (3.4807567)\dfrac{2}{\sqrt{35}}\\\\=12\pm1.18\\\\=(10.82\ , 13.18)

Hence, the  99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students = (10.82\ , 13.18)

4 0
3 years ago
Plz Help, I will give Brainliest!!!
vlada-n [284]

Answer:

can u zoom in ?????????????

Step-by-step explanation:

5 0
3 years ago
I report if you answer randomly.
sasho [114]

Answer:

C. n=23; p^=0.5

Step-by-step explanation:

Normal distribution is symmetrical about the mean.

So, p should be close to ½

5 0
3 years ago
The tea chest needs to send the sales tax that it has collected to the state. The total sales, including 4% sales tax are $7115.
Elina [12.6K]
.04*7115.68=284.6272

$284.62 or $284.63 (depending on how lenient your teacher is with rounding)
8 0
3 years ago
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