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HACTEHA [7]
3 years ago
6

Samples of size n = 600 are taken from a telephone survey, and the mean age is taken for each sample. What is the distribution o

f the sample means?
A. skewed to the left
B. normal (approximately)
C. not enough information provided
D. skewed to the right
Mathematics
1 answer:
Nonamiya [84]3 years ago
6 0
The answer in B. For complicated statistics reasons the Central Limit Theorem states that, for sample sizes of above 25 (or 30 depending on the text!), the distribution of sample means is approximately normal regardless of the distribution of the parent distribution
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AveGali [126]

Answer:

Step-by-step explanation:

√x^72 = √(x^36)^2 = x^36

4 0
3 years ago
Help me i got 10 math question plz help 1st one
NISA [10]
1. a 

2. 6 tps baking powder. For every 3, there is two. 3 multiplied by 2 is 6.

3. 12/8 = 1.5 seedling per minute in 70 minutes...
1.5 * 70 = 105 seedlings can be planted in 70 minutes

4. idk sorry

5. time = distance / speed
time = 300/15
time = 20 hrs


7. The ratio between 12 and 8 is 1.5, so you need to divide every other number by 1.5.
2/1.5=1.3

9/1.5=6

18/1.5=12

8. So, problem statement tells you that 1lb = 16oz and that 1oz = 28.3g. That means that 1lb = 16 * 28.3g = 452.8g

You have three items, convert their weights to grams:
1) 800g
2) 1.6lb = 1.6 * 452.8g = 724.48g
3) 30oz = 30 * 28.3g = 849g

So, sorting from greatest:
3, 2, 1, or: 30oz, 1.6lb, 800g.

9. 5•7=30

10.it will clean 7 cars in 56 minutes
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4 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (5,0) and has slope of 2/5
aniked [119]
Answer:
Y=2/5x-2

Explanation:

4 0
2 years ago
Read 2 more answers
Convert 1/16 to<br> percentage
ohaa [14]

Answer:

Convert fraction (ratio) 1 / 16 Answer: 6.25%

8 0
3 years ago
PLease help I have no idea how to this
matrenka [14]

Answer:

y = 3x + 7

Step-by-step explanation:

Parallel lines have the same slope, so you can write the equation y = 3x + b and you have to figure out what b is.

plug in x = -3 and y = -2 into the equation y = 3x + b:

-2 = 3 * -3 + b

-2 = -9 + b

7 = b

So the equation is y = 3x + 7

4 0
3 years ago
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