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2 years ago

The following table shows the number of miles a hiker walked on a trail each day for 6 days.

Mathematics

1 answer:

dedylja [7]2 years ago

6 0

Answer:

i think the answer is either E. or B. i'm not sure if i'm right but if someone can correct me if i'm wrong .

Step-by-step explanation:

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Translate and solve: fourteen less than n is greater than 98.

dangina [55]

Answer: 75

Step-by-step explanation: -14 + 98 =

6 0

2 years ago

Gina wants to save money for a holiday to bali at the end of the year. she estimates that if would cost her $2200 but she only h

inessss [21]

That's a funky problem... :/ I mean it would depend on how much she earns weekly. If she were working 40 hours each week and earning 10$ an hour then yes, she would have enough. Even is she were per say a student on a part time working 30 hours and earning 8$ per hour, she would still have enough.

6 0

2 years ago

The grades on a history midterm at Gardner Bullis are roughly symmetric with μ = 69 μ=69mu, equals, 69 and σ = 3.5 σ=3.5sigma, e

katrin2010 [14]

Answer:

-1.14

Step-by-step explanation:

The given information in statement is

mean=μ=69

standard deviation=σ=3.5

Let X be the Ishaan's exam score

X=65

The Z score can be computed as

$z=\frac{x-mean}{standard deviation}$

$z=\frac{65-69}{3.5}$

z=-1.1429

z=-1.14 (rounded to two decimal places).

Thus, the computed z-score for Ishaan's exam grade is -1.14.

4 0

2 years ago

Les is measuring the border of her bulletin board. She measures around the entire outside of the bulletin board and finds the di

vagabundo [1.1K]

Answer:

Perimeter.

Step-by-step explanation:

Lee measures around the entire outside of the bulletin board and finds the distance is 32 units.

She is measuring the border of her bulletin board.

The sum of outer covering of any object is called its perimeter. Here, 32 unit shows the perimeter of the bulletin board.

7 0

2 years ago

Coupons driving visits. A store randomly samples 603 shoppers over the course of a year and nds that 142 of them made their visi

s2008m [1.1K]

Answer:

The 95% confidence interval for the proportion of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694)

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:

$n = 603, \pi = \frac{142}{603} = 0.2355$

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 lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2355 - 1.96\sqrt{\frac{0.2355*0.7645}{603}} = 0.2016$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2355 + 1.96\sqrt{\frac{0.2355*0.7645}{603}} = 0.2694$

The 95% confidence interval for the proportion of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694)

7 0

2 years ago