Answer:
Step-by-step explanation:
A) License plates are made using 3 letters followed by 3 digits
If repitition is allowed we have
number of plates =
Option B
Out of 10 members 6 can be selected in
10C6 =210
Option B
3 tax returns from 13 can be selected in
13C3 =286
Option D
Prob of taking 3 cherry from 11 cherries is
6C3/11C3=20/165=0.1212
Option B
You should use the distributive property next to get rid of the parentheses.
Answer:
Now we can calculate the p value with this probability:
Since the p value is higher than the significance level provided of 0.1 we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean for this case is higher than 31.1MPG using a significance level of 10%. So then the cliam makes sense
Step-by-step explanation:
Information given
represent the sample mean
represent the population deviation
sample size
represent the value to verify
represent the significance level
z would represent the statistic
represent the p value
Hypothesis to test
We want to check if the true mean for this case is higher than 31.1 MPG, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
Since we know the population deviation the statistic would be given by:
(1)
Replacing the info given we got:
Now we can calculate the p value with this probability:
Since the p value is higher than the significance level provided of 0.1 we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean for this case is higher than 31.1MPG using a significance level of 10%. So then the cliam makes sense