A. The GCF of 18 and 21 is__
1 answer:
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<h2>Answer with explanation:</h2>
Let be the population mean.
For the given claim , we have
Null hypothesis :
Alternative hypothesis :
Since alternative hypothesis is two-tailed , so the test is a two-tailed test.
Given : Sample size : n=220 ;
Sample mean: ;
Standard deviation:
Test statistic for population mean:
By using the standard normal distribution table of z , we have
P-value ( two tailed test ) :
Since , the P-value is greater than the significance level of , it means we do not have sufficient evidence to reject the null hypothesis.
Answer:
As per the given condition:
A new shirt costs $14.99.
If the shirt has a sale for off its price.
Now, we find how much you save on this shirt:
First find the of $14.99
i.e,
⇒ you have the discounted value is $ 3 .
You pay for the shirt is: $14.99 -$ 2.998 = $11.992
Therefore, you would save $2.998 or $ 3 in buying your new shirt.