Answer:
Check the explanation
Step-by-step explanation:
Hypotheses are:
Following is the output of t test:
Hypothesis Test: Independent Groups (t-test, pooled variance)
X1 X2
12 15.5 mean
3.6591 3.6839 std. dev.
10 15 n
23 df
-3.5000 difference (X1 - X2)
13.4999 pooled variance
3.6742 pooled std. dev.
1.5000 standard error of difference
0 hypothesized difference
-2.33 t
.0287 p-value (two-tailed)
The p-value is:
p-value = 0.0287
Since p-value is less than 0.05 so we reject the null hypothesis. That is we can conclude that the exercise program have a significant effect.
(b)
The cohen's d is
Pretty Sure its
1=square root
2=inverse operations
3=cube root
Answer:
87 customers
Step-by-step explanation:
Consider the below table is attached with this question.
From the below table it is clear that the number of customers entered between 1:00 to 4:00 is
The number of customers leaved between 1:00 to 4:00 is
Total change in the number of customers between 1:00 to 4:00 is
There were 75 customers in the store at 1:00. So, total number of customers at 4:00 is
The store must be emptied of customers when it closes at 5:00
Therefore, 87 customers must leave the store between 4:00 and 5:00.
Answer:
there both going at the same rate
Step-by-step explanation:
10 miles -1/4 hour
20 miles - 2/4 =1/2
30 miles - 3/4
462/2=231
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