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Probability: application of school children with asthma

A research company stated that 20% of missed school days are due to asthma. If a group of 400 school children are selected at random, what is the probability that fewer than 70 will miss school because of asthma? a) 0.1056 b) 0.0947 c) 0.1170 d) 0.4049 e) None of the above

Subject:

Statistics

Topic:

All Topics

Posting ID:

6064

OTA ID:

103234

View Details $1.99 Download Add to Cart

Normal distribution, standard deviation and mean

If IQ scores on a Stanford-Binet Test are normally distributed with a mean of 100 and a standard deviation of 15, then about how many people in a randomly chosen million would be expected to score at 160 or above? (This was at one time the break off score for the "genius" designation.) a) 47 b) 32 c) 16 d) 5 e) None of the above

Subject:

Statistics

Topic:

All Topics

Posting ID:

6065

OTA ID:

101298

View Details $1.99 Download Add to Cart

Area under a normal distribution curve

What is the area under the normal standard distribution curve to the left of z = 0.87? a) 0.3078 b) 0.8078 c) 0.1922 d) 0.6922 e) None of the above

Subject:

Statistics

Topic:

All Topics

Posting ID:

6066

OTA ID:

101298

View Details $1.99 Download Add to Cart

Probability: school children with asthma

A research company stated that 20% of missed school days are due to asthma. If a group of 400 school children are selected at random, what is the probability that fewer than 70 will miss school because of asthma? a) 0.1056 b) 0.0947 c) 0.1170 d) 0.4049 e) None of the above

Subject:

Statistics

Topic:

All Topics

Posting ID:

6067

OTA ID:

103234

View Details $1.99 Download Add to Cart

Working with probability in a coin toss

If one flips a fair coin 5 times, what is the probability of not getting 5 tails?

Subject:

Statistics

Topic:

All Topics

Posting ID:

6116

OTA ID:

103139

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