3) You are being asked to translate a numerical value to a subjective statement. There are no hard-and-fast rules for this. Generally, the meanings of the terms you're asked to choose from are ...

impossible: probability is zero. The outcome cannot occur.
unlikely: chances are less than even; often, "unlikely" means a probability of 10%, 5%, 1% or lower, depending on the context.
equally likely: probability is near 50%
likely: more likely than not. Again, this depends on the context.
certain: probability is 1. There is no chance the outcome will not occur.

An 80% probability is greater than 50%, so might reasonably be called "likely."

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4) a. Four of the eight numbers are even, so the probability of obtaining an even number at random is 4/8 = 1/2.

b. A probability of 50% might reasonably be called "equally likely", as the probability the event will occur is equal to the probability it won't.

4 0

2 years ago

he dot plot shows the number of words students spelled correctly on a pre-test. A number line going from 2 to 11. 0 dots are abo

Klio2033 [76]

<h3>Answer: B. Graph is nearly symmetrical</h3>

Explanation:

Given information:

A number line going from 2 to 11.
0 dots are above 2.
0 dots are above 3.
1 dot is above 4.
2 dots are above 5.
4 dots are above 6.
4 dots are above 7.
3 dots are above 8.
2 dots are above 9.
2 dots are above 10.
0 dots are above 11.

From that we can see the data set is {4,5,5,6,6,6,6,7,7,7,7,8,8,8,9,9,10,10} which produces the dot plot you see in the image attachment below.

It's a bit tricky to see, but the graph is nearly symmetrical. If we were to remove the blue points in the dot plot I provided, then we'll get a perfectly symmetrical distribution. Symmetrical means one half is a mirror copy of the the other half. The center line of a symmetrical distribution is both the mean and median.

3 0

2 years ago

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