3.25×5=16.25
5 hours for 1 person
16.25×2=32.5
5 hours for 2 people
Answer:
21:24
Step-by-step explanation:
7:8 is your ratio
so if _:24 is equivalent, you have to figure out what 24 is divisible by to equal 8
8×3=24
so now we have to multiply 7 by 3
7×3=21
so your answer is 21:24 = 7:8
hope this helps :)
Answer:
Step-by-step explanation:
From this study:
The null hypothesis:

The altenative is:

This test is a two-tailed test.
However; we are told that the wives have 44 success out of 66, then the number of failures will be 22.
Then;


Similarly, the husbands have 18 success out of 46, then the number of failures will be 28
Then:


The pooled proportion 

p = 0.55357
The estimated standard error S.E is:

= 


= 0.0955
The Z test statitics can now be computed as:


Z = 2.88
Th p -value from the test statistics is:
p-value = 2P(Z > 2.88)
p- value = 2 P (1 - Z < 2.88)
p-value = 2 ( 1 - 0.998)
p-value = 2 ( 0.002)
p -alue = 0.004
Decision Rule:
Thus, at 0.01 significance level, we reject the null hypothesis because, p-value is less than that (i.e. significance level)
Conclusion:
We conclude that there is a significant difference between the proportions.
Answer:
x=5
Step-by-step explanation:
Since the triangles are similar we can use ratios to solve
4.5 7.5
---- = ------
3 x
Using cross products
4.5x = 3 * 7.5
4.5x = 22.5
Divide each side by 4.5
x = 22.5/4.5
x=5
4 personal training sessions.
45 + 35n = 185
85 + 25n = 185
N=4