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Brilliant_brown [7]
3 years ago
15

An experiment involves flipping a coin three times.

Mathematics
1 answer:
goblinko [34]3 years ago
4 0
50/50 change because your only flipping it 2
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Quadrilateral ABCD is inscribed in a circle. Angle B measures 19°. What is the measure of angle D?
kherson [118]

Answer:

D = 161^o

Step-by-step explanation:

Given

\angle B = 19^o

Required

Find D

The label of the quadrilateral are not clear. However, a more complete question illustrates that B and D are opposite sides.

To solve for D, we make use of:

B + D = 180^o ---- opposite sides of a cyclic \\ quadrilateral

Make D the subject

D = 180^o -B

D = 180^o -19^o

D = 161^o

5 0
3 years ago
An independent random sample is selected from an approximately normal population with an unknown standard deviation. Find the p-
Vedmedyk [2.9K]

The complete question is missing, so i have attached it

Answer:

A) Reject the null hypothesis

B) Reject the null hypothesis

C) Fail to reject the null hypothesis

D) Reject the null hypothesis

Step-by-step explanation:

A) We are given;

Ha: μ > μ_o (This is thus, a one-tail problem)

n = 11

T = 1.91

Using online p-value from t-score calculator as attached with a DF = n - 1 = 11 - 1 = 10, and t-value = 1.91, and significance level of 0.05, and 1 tail, we have;

The p-value is 0.042602

P-value is less than significance level, thus, we will reject the null hypothesis

B) We are given;

Ha: μ < μ_o (This is thus, a one-tail problem)

n = 17

T = -3.45

Using online p-value from t-score calculator as attached with a DF = n - 1 = 17 - 1 = 16, and t-value = 1.91, and significance level of 0.05, and 1 tail, we have;

The p-value is  0.001647

P-value is less than significance level, thus, we will reject the null hypothesis

C)We are given;

Ha: μ ≠ μ_o (This is thus, a two-tail problem)

n = 7

T = 0.83

Using online p-value from t-score calculator as attached with a DF = n - 1 = 7 - 1 = 6, and t-value = 0.83, and significance level of 0.05, and 2 tail, we have;

The p-value is 0.438308.

P-value is higher than the significance level, thus, we will fail to reject the null hypothesis.

D) We are given;

Ha: μ > μ_o (This is thus, a one-tail problem)

n = 28

T = 2.13

Using online p-value from t-score calculator as attached with a DF = n - 1 = 28 - 1 = 27, and t-value = 2.13, and significance level of 0.05, and 1 tail, we have;

The p-value is 0.021218

P-value is lower than the significance level, thus, we will reject the null hypothesis

P-value is lower than the significance level, thus, we will reject the null hypothesis.

6 0
3 years ago
Find the total cost to the nearest cent.<br> $16 haircut; 15% tip
photoshop1234 [79]
$18.40 with the tip added to the price because the tip will be $2.40
8 0
3 years ago
Look at the following expression and tile model. White tiles are positive and gray tiles are negative.
Dovator [93]

Answer:

5

Step-by-step explanation:

8 0
2 years ago
Which box-and-whisker plot displays the data?
lisabon 2012 [21]

Answer:

d

Step-by-step explanation:

5 0
3 years ago
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