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Ad libitum [116K]
4 years ago
9

I need help on this question

Mathematics
1 answer:
Digiron [165]4 years ago
3 0
Line graph is the correct answer
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A random sample has been taken from a population. A statistician, using this sample, needs to decide whether to construct a 90 p
AURORKA [14]

Answer:

Step-by-step explanation: a confidence interval is a range that shows how precise the measurement is. if a statistician decides to construct using 90 percent C I over a 95% C I, it tells you that you have 10% chance of being wrong rather than 5% chance of being wrong while using the 95%. Also a 90 percent confidence interval would be narrower than a 95 percent confidence interval

5 0
3 years ago
12km<br>Radius=<br>Diameter:​
vovikov84 [41]
Answer: 24km

Explanation: radius is half of the diameter so we just multiply by 2 to get a diameter
7 0
3 years ago
Melissa scored 120 points in each game how many points did she score in 10 games
Goshia [24]

Answer:

She scored 1200 in all ten games

5 0
3 years ago
Read 2 more answers
A multinational firm wants to estimate the average number of hours in a month that theiremployees spend on social media while on
elena55 [62]

Answer:

95% of the population spent between 16.8 hours to 26.2 hours on social media per month

Step-by-step explanation:

  1. subtracting 1 from sample size: 83-1= 82
  2. Note Mean=21.5 and standard deviation=2.5
  3. Subtracting confidence interval from 1 and dividing by 2: (1-0.95)/2=0.025
  4. At α=0.025 and dF=82,  the t-distribution table gives  1.984
  5. Divide standard deviation by square root of sample size: 21.5/√83= 2.36
  6. Multiplying answer in step 4 by answer in step 5: 2.36×1.984= 4.68
  7. For lower end: 21.5-4.68= 16.82
  8. for upper end: 21.5+4.68=26.18

7 0
4 years ago
Read 2 more answers
What would 5.36 be in a fraction<br> Please explain how you got the answer too.
garri49 [273]
So you have 5.36
that is 5 wholes and 0.36
0.36 can be written on a fraction of 36/100
simplify it to 9/25
Now you have the mixed number
5  9/25 or to write it into an improper fraction... multiply 25 * 5 then add 9, that is 134/25.

Hope this helps
7 0
3 years ago
Read 2 more answers
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