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4 years ago

Jack is buying breakfast bars.

Mathematics

1 answer:

Elena-2011 [213]4 years ago

5 0

Answer:3 breakfast bars for£1.50

Step-by-step explanation:if you got two packs you would have 6 bars for three pound when one of the offers was 5 breakfast bars for 3 pound so the 3 breakfast bars for £1.50 is the best offer.

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Two drunks start out together at the origin, each having equal probability of making a step to the left or right along the x axi

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They'll meet wen they are sober lol

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3 years ago

The plot below shows the ages of residents at Oak Creek Assisted Living. The black dots represent residents in the east wing, an

KATRIN_1 [288]

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There isn't a plot

Step-by-step explanation:

8 0

3 years ago

What is the sequence of transformations for the image given?

rosijanka [135]

Answer:

reflect over x axis and translate 6

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3 years ago

Identify the length of line BP A) 9.75 B) 6.75 C) 15.75 D) 9

Alekssandra [29.7K]

Answer:

I believe the answer is c because 4.5 can fit in BP almost 4 times so it is most accurate sorry if I'm wrong

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4 years ago

A study done by researchers at a university concluded that 70 70% of all student athletes in this country have been subjected t

Alecsey [184]

Answer:

The margin of error is 0.0206 = 2.06 percentage points.

The 95% confidence interval for the proportion of all student athletes in this country have been subjected to some form of hazing is (0.6794, 0.7206).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 1900, \pi = 0.7$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$M = 1.96\sqrt{\frac{0.7*0.3}{1900}} = 0.0206$

The margin of error is 0.0206 = 2.06 percentage points.

The lower limit of this interval is:

$\pi - M = 0.7 - 0.0206 = 0.6794$

The upper limit of this interval is:

$\pi + M = 0.7 + 0.0206 = 0.7206$

The 95% confidence interval for the proportion of all student athletes in this country have been subjected to some form of hazing is (0.6794, 0.7206).

6 0

4 years ago