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loris [4]
3 years ago
12

5. Solve. 2 Questions only 86 points c) 9.3 = 3n d) 2n - 2.5 = 5.5

Mathematics
1 answer:
lubasha [3.4K]3 years ago
5 0

Answer:

what that person said

Step-by-step explanation:

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When conducting a significance test to determine if there is a difference between two treatments, with a quantitative response v
IRINA_888 [86]

Answer:

option B computing mean and standard deviation of each sample group separately

Step-by-step explanation:

The complete question is:

When conducting a significance test to determine if there is a difference between two treatments, with a quantitative response variable, treatments are given to different experimental units, we summarize the data by:

Group of answer choices:

A) computing the proportion of the sample that reacted better to treatment one than treatment two.

B) computing the mean and standard deviation of each treatment group separately.

C) computing the difference in the responses for each experimental unit under both treatments, and then finding the mean and standard deviation of the differences.

D) computing the difference in the proportion of the sample that reacted better to treatment one and the proportion of the sample that reacted better to treatment two.

The sampling procedure must be unbiased so computing that proportion of sample only that reacted to treatment one will create biasing. The two treatment groups must be separate.

Here means and standard deviation of each treatment group must be computed separately to eliminate the effects of erroneous obseervations.

Based on above explanation, option A, C and D are nullified

3 0
3 years ago
1 over 6th + 3 over 8th
miv72 [106K]
1/6+3/8
=8/48+18/48
=26/48
=13/24
5 0
3 years ago
(8x + 9) + (15 - 8x)
serious [3.7K]

Answer:

24

Step-by-step explanation:

5 0
3 years ago
What is 9.42 nearest tenth
ozzi
9.42 to the nearest tenth is 9.4! 
5 0
3 years ago
Read 2 more answers
Shawn erned 5 dallors an hour mowing lawns pluse 10 welkly allounce from his parents what minmin number of hours he needs to mow
NikAS [45]

Answer:

13 hours

Step-by-step explanation:

Since Shawn mows lawns at a rate of 5 dollars an hour, if he mows for t hours, he earns 5t dollars. Also, he gets 10 dollars weekly allowance from his parents. Thus, the total amount he earns per week is thus 10 + 5t.

Since he needs to earn enough to buy 75 dollars pair of basketball shoes, the amount he earns must equal the price of the shoes. So,

10 + 5t = 75

We now solve for t to find the amount of hours  if takes him to earn enough to buy the shoes.

So,

10 + 5t = 75

Subtracting 10 from both sides, we have

10 - 10 + 5t = 75 - 10

5t = 65

dividing both sides by 5, we have

t = 65/5

t = 13 hours

So, it takes Shawn 13 hours to earn enough to buy the shoes.

7 0
3 years ago
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