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Ulleksa [173]
3 years ago
12

Please help.........

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
8 0
What you need help with
You might be interested in
Find the critical value necessary to form a confidence interval at the level of confidence shown below.
Rzqust [24]

Answer:

the critical value for 0.87 level of confidence is 1.51

Step-by-step explanation:

Given the data in the question;

level of confidence = 0.87

now,

1 - c = 0.87

c = 1 - 0.87

c = 0.13

c/2 = 0.13/2 = 0.065

now

1 - c/2  = 1 - 0.065 = 0.935

so our level of significance ∝ = 0.935

Now, the critical value will be;

Z_{0.935 is obtained as follows;

P( Z < z ) = 0.935

so we find the value from ( standard normal distribution table )

P( Z < 1.51 ) = 0.935

Therefore, the critical value for 0.87 level of confidence is 1.51

8 0
3 years ago
A rectangular chalkboard is 1.7 m long and 0.9 m wide.
IRINA_888 [86]

Answer:

A=1.53\ m^2

Step-by-step explanation:

The length of a chalkboard, l = 1.7

The width of a chalkboard, b = 0.9 m

We need to find the area of the chalkboard. The formula for the area of a rectangle is given by :

A=L\times B\\\\A=1.7\times 0.9\\\\A=1.53\ m^2

So, the area of the chalkboard is equal to 1.53\ m^2.

3 0
3 years ago
Can you help me by solving the following question ?
vredina [299]

Answer:

there should be formula at last look carefully and see formula u will find it

6 0
2 years ago
Please help y - (-10) = 12 <br> y = ______
kotykmax [81]
Subtracting a negative means that you will add the number. Convert the symbols to get the following:

y + 10 = 12

Subtract 10 from both sides.

y = 2


3 0
3 years ago
DON’T SEND A LINK!<br><br> WHAT IS THE SLOPE OF THIS LINE<br><br> THE SLOPE IS NOT 4/1 OR 20/5
aleksandrvk [35]

Answer:

25/5

Step-by-step explanation:

i think

7 0
2 years ago
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