Based on Hugo's study outcomes regarding his pitch speed, choose the correct conclusion that interprets the results within the context of the hypothesis test. a. There is sufficient evidence at the 5% significance level to conclude that the mean speed is greater than 48 miles per hour.
b. There is NOT sufficient evidence 5% significance level to conclude that the mean speed is greater than 48 miles per hour.
c. This is a right-tailed test, and the test statistic is more than the critical value on the right side, so we reject the null hypothesis.
d. This is a right-tailed test, and the test statistic is less than the critical value on the left side, so we reject the null hypothesis.

answer are

step-by-step explanation:

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: