LEVEL 3

Dan enrolls in a basketball league for people over 40. He pays the following fees. --$25 for a team t-shirt --his share of the t

I am Lyosha [343]

I think that you should provide more details

5 0

2 years ago

You randomly select 16 restaurants and measure the temperature of the coffee sold at each. The sample mean temperature is 162 de

stepan [7]

Answer:

b) (156.7, 167.3).

Step-by-step explanation:

Sample size (n) = 16 restaurants

Mean coffee temperature (X) = 162 degrees

Standard deviation (s) = 10 degrees

degrees of freedom (n-1) = 15

t-score for a 95% confidence interval (t) = 2.131415

Assuming a normal distribution, the confidence interval is given by:

$X \pm t*\frac{s}{\sqrt{n} }\\162 \pm 1.960*\frac{10}{\sqrt{16} }$

The lower (L) and upper (U) bounds of the confidence interval are:

$L=162 - 5.3\\L=156.7\\U=162 + 5.3\\U=167.3$

The confidence interval is b) (156.7, 167.3).

6 0

1 year ago

A regular octagon has an apothem measuring 10 in. and a perimeter of 66.3 in. What is the area of the octagon, rounded to the ne

Lerok [7]

Answer:

$332in^2$

Step-by-step explanation:

The area of a regular polygon is calculated using the formula;

$Area=\frac{1}{2}ap$

where $a$ is the apothem and p is the perimeter.

It was given that, the apothem is, $a=10in.$ and the perimeter is $p=66.3 in.$

We substitute into the formula to obtain;

$Area=\frac{1}{2}\times10\times66.3in^2$

$Area=331.5in^2$

To the nearest square inch, we have;

$Area=332in^2$

4 0

2 years ago

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Rory works at a produce packing plant she packed 2172 strawberries last week and put them in a container with 8 strawberries in

mezya [45]

Answer:

Number of containers = 271

Number of strawberries left = 4

Explanation:

Total number of strawberries = 2172.

Number of strawberries per container = 8

Number of strawberry container = Total number of strawberries/Number of strawberries per container.

Number of strawberry container = 2172/8

Refer the figure to see division,

Number of containers = 271

Number of strawberries left = 4

8 0

1 year ago

eddie and Alicia live 20 miles apart and started riding their bikes towards each other at the same time. Eddie rode at 4mph and

Diano4ka-milaya [45]

2 hours because 6 times 2 = 12 and 4 times 2 = 8 and 8 + 12 =20

3 0

2 years ago

Read 2 more answers