2 years ago

Wholelotta swag aneways

Mathematics

1 answer:

aksik [14]2 years ago

3 0

Answer:

period.

Step-by-step explanation:

You might be interested in

Please need help 20 points

Debora [2.8K]

Step-by-step explanation:

90+48=138

180-138=42

y=42

8 0

2 years ago

Maurice and three other volunteers work at the hospital every week. if the number of hours each volunteer works is always the sa

agasfer [191]

12 hours & 4 volunteers

5 0

3 years ago

Read 2 more answers

The weights of 67 randomly selected axles were found to have a variance of 3.85. Construct the 80% confidence interval for the p

VLD [36.1K]

Answer:

$3.13$

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 67

Variance = 3.85

We have to find 80% confidence interval for the population variance of the weights.

Degree of freedom = 67 - 1 = 66

Level of significance = 0.2

Chi square critical value for lower tail =

$\chi^2_{1-\frac{\alpha}{2}}= 51.770$

Chi square critical value for upper tail =

$\chi^2_{\frac{\alpha}{2}}= 81.085$

80% confidence interval:

$\dfrac{(n-1)S^2}{\chi^2_{\frac{\alpha}{2}}} < \sigma^2 < \dfrac{(n-1)S^2}{\chi^2_{1-\frac{\alpha}{2}}}$

Putting values, we get,

$=\dfrac{(67-1)3.85}{81.085} < \sigma^2 < \dfrac{(67-1)3.85}{51.770}\\\\=3.13$

Thus, (3.13,4.91) is the required 80% confidence interval for the population variance of the weights.

8 0

2 years ago

Point a is located at -6/8 and point B is located at -1/8 what is the distance between points A and B

Ahat [919]

The distance between points A and B
(-1/8)-(-6/8) = 5/8

6 0

3 years ago

Which statements<br> are true for the giving geometric sequence check all that apply

professor190 [17]

Where are the statements ???

6 0

2 years ago