Determine the critical value or values for a one-mean z-test at the 1% significance level if the hypothesis test is right-tailed (Ha:μ>μ0). z0.101.282z0.051.645z0.0251.960z0.0 12.326z0.0052.576 Select the correct answer below: −2.326 −2.054 2.054 2.326 −2.054 and 2.054 −2.326 and 2.326

We need to conduct a hypothesis in order to determine if the mean is greater than specified value, the system of hypothesis would be:      

Null hypothesis:      

Alternative hypothesis:      

For this case the significance is 1%. So we need to find a critical value in the normal standard distribution who accumulates 0.99 of the area in the left and 0.01 in the right and for this case this critical value is:

Step-by-step explanation:

Notation

represent the sample mean

represent the standard deviation for the population      

sample size      

represent the value that we want to test    

represent the significance level for the hypothesis test.    

z would represent the statistic (variable of interest)      

State the null and alternative hypotheses.      

We need to conduct a hypothesis in order to determine if the mean is greater than specified value, the system of hypothesis would be:      

Null hypothesis:      

Alternative hypothesis:      

For this case the significance is 1%. So we need to find a critical value in the normal standard distribution who accumulates 0.99 of the area in the left and 0.01 in the right and for this case this critical value is:

42%

step-by-step explanation:

we know,

total people = 60

total males = 25

percentage of males

= 25/60 × 100

= 25/6 × 10

= 25/3 × 5

= 125 / 3

= 41.

rounding of = 42%

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step-by-step explanation: