Answer:
So she can predict that she will be 39 out of 40 times she will be on time.
Step-by-step explanation:
The light rail service claims that it on time 98% of the time .
Given the girl takes light rail service 40 times per month .
Assuming the statement given by the light rail serve is correct 98% of 40 times the girl reaches on time , which is 39 times.
So she can assume that she will be 39 out of 40 times she will be on time.
No the light rails is not accurate if she was late 6 times out of 40 times in a month. Because by the statement given by light rail service she can miss a maximum of 1 time .
Answer:
If we compare the p value and using any significance level for example always so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that at 5% of significance the proportion for women made is higher than the proportion for male.
Step-by-step explanation:
Data given and notation
sample 1 male selected
sample 2 female selected
represent the proportion of male selected
represent the proportion of female selected
z would represent the statistic (variable of interest)
represent the value for the test (variable of interest)
Concepts and formulas to use
We need to conduct a hypothesis in order to check if the proportion for female is greater than males , the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
We need to apply a z test to compare proportions, and the statistic is given by:
(1)
Where
Calculate the statistic
Replacing in formula (1) the values obtained we got this:
Statistical decision
Since is a one sided test the p value would be:
If we compare the p value and using any significance level for example always so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that at 5% of significance the proportion for women made is higher than the proportion for male.
Answer:
5.19
Step-by-step explanation:
first do 28.86 / 6 to find out how much each paid. then subtract that number (4.81) from 10
Answer:
2 × 3 × 3.
Step-by-step explanation:
Find a way to turn the fraction into a whole number so it will be easier to multiply, add, etc.