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Andrew [12]
3 years ago
7

8.06

Mathematics
1 answer:
mars1129 [50]3 years ago
8 0

Answer:

The confidence interval is between 52.2% and 55.8%

Step-by-step explanation:

Since the study showed that 54% of the people involved in the study had experienced flu-like symptoms, and the margin of error is 1.8%, which is relatively small margin of error, we can easily come to the confidence interval. Since the margin of error goes both ways, above and below the official percentage, in order to get to the confidence interval we need to deduct the margin of error from the percentage, and also, separately, to add the margin of error to the percentage.

54 - 1.8 = 52.2

So the low border of the confidence level is 52.2%.

54 + 1.8 = 55.8

So the high border of the confidence level is 55.8%.

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Tony likes to run during his free time. He runs a pace of 5.5 minutes per mile. On Saturday, Tony started running at 8:30am and
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3 years ago
You have a jar of jelly beans in front of you
Zepler [3.9K]

Answer: The probability of selecting either a lime or bubble gum followed by a papaya is 425/2209

Step-by-step explanation:

Since, there are four types of items in the jar, namely- lime, papaya, mango and bubble gum that have quantities of 12, 17, 5 and 13 respectively. Before finding the probabilities, we first add up the quantities or number of different items in the jar.

12 + 17 + 5 + 13 = 47 in total.

Since lime is 12 in number, the probability of selecting a lime is = 12/47.

Bubble gums are 13 in number, so the probability of selecting a bubble gum = 13/47.

Then the probability of selecting either a lime or a bubble gum is the addition of the probabilities of selecting a lime and selecting a bubble gum:

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Again, the probability of selecting a papaya is =

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If the system is with replacement, then the probability of selecting a lime or bubble gum followed by a papaya is:

= Probability of selecting a lime or bubble gum × Probability of selecting papaya

= 25/47 × 17/47

= 425/2209

The probability of selecting a lime or bubble gum followed by a papaya is 425/2209

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3 years ago
Each child has 4 apples. If there are 39 children, how many apples are there in total
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Step-by-step ex

5 0
3 years ago
Read 2 more answers
Need help please<br><br> -f-5(2f-3)
lana [24]
-f - 5(2f - 3)

1. -5 * 2f = -10f
2. -5 * -3 = 15
3. -f - 10f + 15
4.Add like terms,
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5.-11f + 15

Answer: -11f + 15
3 0
3 years ago
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