Answer:
1/2 or one half
Step-by-step explanation:
I = inches.
2.5*i= the answer
All I need to know is the actual number of inches so that i can give you the exact answer
Answer:
A.
Step-by-step explanation:
If Jordan has $55 and she earns $67 by doing chores, you can calculate how much money does Jordan have now using the following step:
$55 + $67 = $122
Result: Jordan has $122.
Answer:
Reject at 5%, accept at 1% the null hypothesis
Step-by-step explanation:
Set up hypotheses as
(Left tailed test)
Population std dev = 6
Sample std error =
Mean difference = -1.5
Since sigma is known we can use Z test
Z = mean diff/std error = -1.7533
p value = 0.039
a) Since p value <0.05 we reject H0. There is evidence that the true mean is different from 60 wpm
b) Yes, because his sample would have been biased since he may want to prove his belief so slow or inefficient persons he would have selected in the sample.
c) For 99% confidence interval critical value = 2.58
Confidence interval for population mean = 58.5±2.58*std error
=(56.2928, 60.7072)
Since this contains 60, the hypothesized mean, we accept null hypothesis.
we do not have evidence to reject the claim that the average graduate can type 60 wpm at 1% level of significance.