3 years ago

Someone help me please

1 answer:

5 0

Answer:

Step-by-step explanation:

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VashaNatasha [74]

Answer:

The t value for 99% CI for 21 df is 2.831.

The critical value that should be used in constructing the confidence interval is (64.593, 86.407).

Step-by-step explanation:

Now the sample size is less than 30 and also population standard deviation is not known.

Then we will use t distribution to find CI

t value for 99% CI for 21 df is TINV(0.01,21)=2.831

The margin of error is $E=t\times\frac{s}{\sqrt{n}}\\\\=2.831\times\frac{18.07}{\sqrt{22}}\\\\=10.907$

Hence CI is $CI=\overline{x} \pm E\\\\ =75.50 \pm 10.907\\\\=(64.593,86.407 )$

8 0

3 years ago

Dvinal [7]

Answer:

pus$y

Step-by-step explanation:

4 0

3 years ago

cestrela7 [59]

Answer:

104

Step-by-step explanation:

cuz it iz

7 0

3 years ago

Softa [21]

30(x)<=145 and yes she would be able to make 4 bracelets because 30 x 4 = 120 and that is less than 145

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4 years ago

Alchen [17]

All that is needed is for you to graph the points and if they form a line, they will be collinear. If not, they will not be collinear.

4 0

4 years ago