Answer:
p value = 0.039
t = - 2.169
Step-by-step explanation:
Applying the null and alternate hypothesis
using excel worksheet to calculate for ( t and p )
t = -2.169
p = 0.039
from the results obtained
The conclusion is affected by the significance level because : 0.1 < p > 0.01
so when the significance level is = 0.1 the Null hypothesis is rejected and we can say the mean time interval will change while
if the significance level = 0.01 the Null hypothesis is accepted and we can not say the mean time interval has changed because the p -value is greater than 0.01
attached is the excel solution
Do 340 ✖️0.20, and you'll get 68. Since that's 20% of 340, do 340 ➖ 68 and you'll get your final answer.
Answer:
1/35
Step-by-step explanation:
Number of students born in a country other than the United States = 1/20
Also, 4/7 of 1/20 were born in Puerto Rico
Portion of the student body born in Puerto Rico is therefore = 4/7 of 1/20
4/7 x 1/20
Multiply through
4/140
1/35
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