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mafiozo [28]
3 years ago
15

3

Mathematics
1 answer:
Elanso [62]3 years ago
6 0

Answer:

Step-by-step explanation:

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Greta bought three 15-pounds bags of dry dog food.Her dog eats 10 ounces of dry dog food each day.After how many days will Greta
sdas [7]
72 days

there are 720 ounces total (convert 45 pounds to 720 ounces)
divide that by the 10 ounces per day and get 72 days
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3 years ago
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In estimating the mean score on a fitness exam, we use an original sample of size n 3 and a bootstrap distribution containing 50
maw [93]

Answer:

C) 67.5 to 72.5

Step-by-step explanation:

The value to calculate the confidence interval is given as:

(x-z_{\frac{\alpha}{2}} \times \frac{\sigma}{\sqrt{n}},x-z_{\frac{\alpha}{2}} \times \frac{\sigma}{\sqrt{n}})

Margin of error is given by:

z_{\frac{\alpha}{2} } \times \frac{\sigma}{\sqrt{n}}

Using a sample of size n = 3, with 95% confidence the confidence interval came out to be 67 to 73.

We need to identify the new confidence interval if the sample size is increased to n = 16

If you observe the formula, you will see that the sample size(n) is in the denominator. This means, if value of n will be increased the value of fraction will be decreased, which will result in an overall smaller value of margin of error. Since, margin of error is smaller, the values of confidence interval will be closer to the mean.

From here, we can conclude that if sample size is increased, the confidence interval will get narrower. From the given options only option C contains a narrow confidence interval. Therefore, correct answer will be option C: 67.5 to 72.6

7 0
3 years ago
Ariel recorded the number of e-mails she received
gizmo_the_mogwai [7]
D. 24
Mode is the number most often repeated in the sequence.
4 0
2 years ago
Which sum or difference is equivalent to the following expression 3x-2/9
aleksandr82 [10.1K]

Answer:

The answer is the first one 1/3X-2/9

Step-by-step explanation:

The answer is the first one because when you   apply the distributive property with the 9 division, you get the exact same number as the first option

(3x-2)÷9== (3÷9)X-(2÷9)---> 1/3X-2/9

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3 years ago
P q is false and p is true. q is Tue False​
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Is this a questionable
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