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3 years ago

9

Neelam’s team had a mean score of 150 in the 4 games his team played this season. Alanoud’s team had a mean score of 80 in the 6

games her team played. What is the mean score for all 10 games played?

2 answers:

Afina-wow [57]3 years ago

7 0

Answer:

115

Step-by-step explanation:

This question is basically asking what is the mean of 80 and 150. Therefore it is 115

Tatiana [17]3 years ago

6 0

Answer:

115

Step-by-step explanation:

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If a board game was originally $25 and it was on sale for $18 what is the percent of discount

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The percent of the discount is 28 percent off

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3 years ago

On a scale drawing of Princeton, two landmarks are shown 2 centimeters apart. If the scale of the map is 1 centimeter : 35 kilom

tankabanditka [31]

Answer:

70 km

Step-by-step explanation:

2 cm is twice as much as 1 cm. So, the distance between landmarks will be twice as much as 35 km.

The actual distance is 70 km.

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3 years ago

A certain test preparation course is designed to help students improve their scores on the LSAT exam. A mock exam is given at th

OlgaM077 [116]

Answer:

Interval [16.34 , 21.43]

Step-by-step explanation:

First step. <u>Calculate the mean</u>

$\bar X=\frac{(23+18+23+12+13+23)}{6}=18.666$

Second step. <u>Calculate the standard deviation</u>

$\sigma =\sqrt{\frac{(23-18.666)^2+(18-18.666)^2+(23-18.666)^2+(12-18.666)^2+(13-18.666)^2+(23-18.666)^2}{6}}$

$\sigma=\sqrt\frac{18.783+0.443+18.783+44.435+5.666+18.783}{6}$

$\sigma=\sqrt{17.815}=4.22$

As the number of data is less than 30, we must use the t-table to find the interval of confidence.

We have 6 observations, our level of confidence DF is then 6-1=5 and we want our area A to be 80% (0.08).

We must then choose t = 1.476 (see attachment)

Now, we use the formula that gives us the end points of the required interval

$\bar X \pm t\frac{\sigma}{\sqrt n}$

where n is the number of observations.

The extremes of the interval are then, rounded to the nearest hundreth, 16.34 and 21.43

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3 years ago

Caleb strung a 12 foot rope from the bottom of one fence post to the top of another. He measured the angle of elevation of the r

OLEGan [10]

The answer for this question is b because the angle of elevation of the rope as 35°

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3 years ago

Let X denote the amount of time a book on two-hour reserve is actually checked out, and suppose the cdf is the following.

goldfiish [28.3K]

Answer: a) 0.2500

b) 0.1875

c) 0.4375

d) 1.414

e) 0, x/2

f) 1.3333

g) 0.4714

h) 2

Step-by-step explanation: see attachment below

3 0

3 years ago