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3 years ago

Is this question a statistical question Which student spends the most time playing musical instruments? explain why or why not

1 answer:

7 0

Statistical questions are questions that are answered by collecting variable data, which can be given as an average/range/percentage. This question has a single answer, and therefore it is not a statistical question. A statistical question would be, for example, What is the average amount of time students in this class spend playing musical instruments?

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At a farmers market, Apples are priced at 4lbs for 10$ Raigen needs 8 pounds to make Apple pie. Which equation can be used to fi

Rasek [7]

Answer:

The equation S / 8 = 2.5

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3 years ago

You recently took a statistics exam in a large class. The instructor tells the class that the scores were Normally distributed,

Lunna [17]

Answer:

b. the area to the right of 2

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X, which is also the area to the left of Z. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X, which is the area to the right of Z.

In this problem:

$X = 96, \mu = 72, \sigma = 12$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{96 - 72}{12}$

$Z = 2$

Percentage who did better:

P(Z > 2), which is the area to the right of 2.

5 0

3 years ago

19) At a local river, there were 48 alligators lying on the riverbank. If of the alligators wereasleep, how many were not asleep

sergey [27]

19) 48 alligators; 7/8 of the alligators were asleep. How many were not asleep?

8/8 - 7/8 = 1/8
48 * 1/8 = 48/8 = 6 alligators were not asleep.

20) 2/3 of the student population participated. 1,500 is the student population of the school. HOw many attended the bike rally?

1500 * 2/3 = 1500*2 / 3= 3000 / 3 = 1000 students attended.

21) 18 times at bat:
Kayla 5/6 of the time = 18 * 5/6 = 18*5 / 6 = 90/6 = 15 hits
Tia 8/9 of the time = 18 * 8/9 = 18*8 / 9 = 144/9 = 16 hits

Tia got more hits.

3 0

3 years ago

Solve the equation 4^3x+2=3

const2013 [10]

Answer:

Exact Form:

x = 1/64

Decimal Form:

x = 0.015625

Step-by-step explanation:

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3 years ago

WHERES THE BEEF???????????????????<br> hehehe sorry ab that im just HELLA bored over here ;)

ddd [48]

Me too tbhh school sucks omggg I have to put like an equation because If

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3 years ago