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kolbaska11 [484]
3 years ago
10

May has 31 days. How would the experimental probability be affected if someone mistakenly used 30 days to calculate the experime

ntal probability that the maximum temperature will not be greater than 90ºF on a given day in May? (Hint: Select the correct reason with the correct calculation.)
answer choices:
20/31 is greater than 19/30 so using fewer days in the month produces a smaller probability

19/31 is greater than 19/30 so using fewer days in the month produces a smaller probability

20/31 is greater than 19/30 so using fewer days in the month produces a greater probability

19/30 is greater than 20/31 so using fewer days in the month produces a greater probability
Mathematics
1 answer:
Mars2501 [29]3 years ago
3 0
<span>20/31 is greater than 19/30 so using fewer days in the month produces a greater probability i think so 
</span>

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Answer it plzzz plz <br>you would live long if correct answer​
Ede4ka [16]

Answer: 3^15

Step-by-step explanation:

Explained in attached picture. Hope you'll find it easy to understand. If not, you can comment :)

8 0
2 years ago
A fast food restaurant executive wishes to know how many fast food meals teenagers eat each week. They want to construct a 99% c
Lana71 [14]

Answer:

The minimum sample size required to create the specified confidence interval is 2229.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.575

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

What is the minimum sample size required to create the specified confidence interval

This is n when M = 0.06, \sigma = 1.1

0.06 = 2.575*\frac{1.1}{\sqrt{n}}

0.06\sqrt{n} = 2.575*1.1

\sqrt{n} = \frac{2.575*1.1}{0.06}

(\sqrt{n})^{2} = (\frac{2.575*1.1}{0.06})^{2}

n = 2228.6

Rounding up

The minimum sample size required to create the specified confidence interval is 2229.

7 0
3 years ago
A supermarket sells two flavors of cereal: a fruit flavor and a chocolate flavor. In a market survey, the event that a customer
Sedaia [141]
This is a binomial distribution.
p = 0.71, q = 1 - p = 1 - 0.71 = 0.29, n = 20

P(x ≤ 19) =1 - P(x = 20) = 1- 20C20 x (0.71)^(20 - 20) x (0.29)^20 = 1 - 0.29^20 = 1 - 0 = 1
4 0
3 years ago
Which graph most likely shows the experimental probability histogram of X based on 100 data points?
Archy [21]

Answer:

  see attached

Step-by-step explanation:

Based on 100 trials, we don't expect the experimental probability to deviate much from the theoretical probability. The scales on the attached graphs are hard to read, but you want to choose the graph that ...

  • has bars that total 100 in their length
  • has bars that are approximately .50, .25, .17, .08 in height, corresponding to the area fraction

We think the appropriate choice may be C, but we cannot tell for sure.

3 0
2 years ago
The last time it placed an order for ingredients, Sweet Treats Bakery ordered 7,160 kilograms of sugar. This time, the bakery is
melomori [17]

Answer:

4296 kg

Step-by-step explanation:

40/100 = x/7160

716 times 6 is 4296

3 0
2 years ago
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