7th 7-3 Experimental Probability

A 7th grade class rolls a number cube 50 times. The number cube has sides labeled 1 through 6. The table shows the results. Find the relative frequency for​ "roll a number less than 4​."

• 36%

• 16%

• 64%

• 24%

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

A 7th grade class rolls a number cube 50 times. The number cube has sides labeled 1 through 6. The table shows the results. Find the experimental probability for​ "roll a number greater than 4​."

• 60%

• 20%

• 40%

• 80%

Tags

CCSS.7.RP.A.3

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

Ellen flipped a coin 80 times. The coin landed heads up 44 times and tails up 36 times. The difference between the experimental probability and the theoretical probability is?

• 55%

• 5%

• 50%

• 45%

After many​ studies, a researcher finds that the probability a​ word-recognition program correctly interprets a​ hand-written word is 9/10. How many words would the researcher expect the program to interpret correctly out of 40 ​words?

• 40

• 36

• 4

• 32

The difference between the experimental probability and the theoretical probability of P(greater than or equal to 2) is?

• 4.5%

• 6.7%

• 10%

• 9.3%

P(greater than or equal to 2)  the theoretical and experimental probability are so different?  Mark all true statments.

• The experimental probability only matches the theoretical probability in a very small number of trials.

• The spinner may not be a fair spinner. The experimental probability assumes that the spinner is a fair spinner.

• The spinner may not be a fair spinner. The theoretical probability assumes that the spinner is a fair spinner.

• The experimental probability of an event occurring is not guaranteed to match the theoretical​ probability, but with more​ trials, they should get closer.

• If a large number of trials are preformed and the experimental and theoretical probabilities remain very different, it is possible that the spinner may be rigged.

The manager of a restaurant wants to add two new side dishes to the menu. She asked a sample of customers during one of her evening shifts which side dish​ he/she prefers. The table shows the​ customers' responses. What is the experimental probability that a customer prefers a baked potato or asparagus?

• 26%

• 34%

• 40%

• 60%

The table shows the letter grades in science class for a random sample of 300 sixth grade students. Find the relative frequency for Passing (D or better)?

• 20%

• 15%

• 85%

• 80%

The table shows the letter grades in science class for a random sample of 300 sixth grade students. Find the relative frequency for Failing (F)?

• 20%

• 15%

• 85%

• 80%

The table shows the letter grades in science class for a random sample of 300 sixth grade students. Find the relative frequency for Passing (D or better) or Failing (F)?

• 100%

• 15%

• 85%

• 80%