All categories

2 years ago

What percent of the data lies between 109 minutes and 138 minutes?

Mathematics

2 answers:

raketka [301]2 years ago

8 0

Answer:

B. 50% is the answer.

Step-by-step explanation:

that's the answer.

NikAS [45]2 years ago

7 0

Answer:

the 2nd part is b. and c.

You might be interested in

The population of Nottingham High School can be modeled using the equation

torisob [31]

$\stackrel{\textit{population of Nottinghan HS}}{P(t)=2600(0.96)^t} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{t=14}}{P(14)}~~ = ~~2600(0.96)^{14}\implies \stackrel{\textit{in the year 2014, the population will be about 1468}}{P(14) ~~\approx ~~1468}$

8 0

2 years ago

a recipe for sweet potato pie calls for 3/4 cup of milk. Martina has 6 cups of milk. How many sweet potato pies can she make wit

hoa [83]

6 ÷ 3/4 = 6/1 ×4/3 = 24/3= 8... 8 sweet potatoe pies

3 0

3 years ago

Read 2 more answers

Nina earns $117.60$117.60 for 1414 hours of work.

pochemuha

For Nina: 117.60 / 1414 = 0.083168317 For Ty: 148.50 / 1818 = 0.081683168 For Kim: 137.60 / 1616 = 0.085148515 Then Kim has the highest pay rate in dollars per hour with a total of 0.085148515 $ / h.

6 0

3 years ago

The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a normally distribu

Elodia [21]

Answer:

a) Standard error = 0.5

b) 99% Confidence interval: (19.2125,21.7875)

Step-by-step explanation:

We are given the following in the question:

Population mean = 20.50 mpg

Sample standard deviation = 3.00 mpg

Sample size , n = 36

Standard Error =

$=\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = 0.5$

99% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.575$

$20.50 \pm 2.575(\displaystyle\frac{3}{\sqrt{36}})= 20.50 \pm 1.2875 = (19.2125,21.7875)$

4 0

2 years ago

The attic shown is a triangular prism. Insulation will be placed inside the walls, not including the floor. Find the surface are

maria [59]

Answer:

$1,125\ ft^{2}$

Step-by-step explanation:

we know that

The surface area of the triangular prism that will be covered with insulation is equal to the area of the two triangular faces plus the two lateral rectangular faces

$SA=2[\frac{1}{2}(15)(15)]+2[(30)(15)]= 1,125\ ft^{2}$

3 0

3 years ago