Question

A fifth grade teacher assumes that 23% of her students are late for class. If the...

A fifth grade teacher assumes that 23% of her students are late for class. If the teacher is correct, what is the probability that the proportion of late students in a sample of 622 students would differ from the population proportion by less than 3%? Round your answer to four decimal places.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A fifth grade teacher assumes that 26% of her students are late for class. If the...
A fifth grade teacher assumes that 26% of her students are late for class. If the teacher is correct, what is the probability that the proportion of late students in a sample of 771 students would differ from the population proportion by less than 3%? Round your answer to four decimal places.
Suppose 52% of the students in a university are baseball players. If a sample of 411...
Suppose 52% of the students in a university are baseball players. If a sample of 411 students is selected, what is the probability that the sample proportion of baseball players will differ from the population proportion by less than 5%? Round your answer to four decimal places.
A standardized test is given to an eighth grade class and an eleventh grade class. The...
A standardized test is given to an eighth grade class and an eleventh grade class. The superintendent believes that the variance in performance from the eighth grade class is smaller than the variance in performance from the eleventh grade class. The sample variance of a sample of 4 test scores from the eighth grade class is 22.72. The sample variance of a sample of 14 test scores from the eleventh grade class is 26.36. Test the claim using a 0.025...
A standardized test is given to a sixth grade class and a ninth grade class. The...
A standardized test is given to a sixth grade class and a ninth grade class. The superintendent believes that the variance in performance from the sixth grade class is different than the variance in performance from the ninth grade class. The sample variance of a sample of 16 test scores from the sixth grade class is 23.64. The sample variance of a sample of 10 test scores from the ninth grade class is 14.9. Test the claim using a 0.05...
A researcher believes that 9% of males smoke cigarettes. If the researcher is correct, what is...
A researcher believes that 9% of males smoke cigarettes. If the researcher is correct, what is the probability that the proportion of smokers in a sample of 664 males would differ from the population proportion by less than 3%? Round your answer to four decimal places
A 6th grade teacher was interested in comparing two ways of teaching math to her students....
A 6th grade teacher was interested in comparing two ways of teaching math to her students. She used method A with one of her existing classes and method B with another one. She flipped a coin to decide which class would receive method A. At the end of the year her students obtained the following scores (percent correct) on a comprehensive math exam. Method A: 75, 82, 88, 93, 69, 72, 78, 81, 84, 96 Method B: 66, 84, 72,...
1. Suppose a large shipment of telephones contained 7% defectives. If a sample of size 247...
1. Suppose a large shipment of telephones contained 7% defectives. If a sample of size 247 is selected, what is the probability that the sample proportion will be greater than 9%? Round your answer to four decimal places 2. Suppose 48% of the population has myopia. If a random sample of size 484 is selected, what is the probability that the proportion of persons with myopia will differ from the population proportion by less than 3%? Round your answer to...
The reading speed of second grade students in a large city is approximately​ normal, with a...
The reading speed of second grade students in a large city is approximately​ normal, with a mean of 89 words per minute​ (wpm) and a standard deviation of 10 wpm. Complete parts​ (a) through​ (f). ​(a) What is the probability a randomly selected student in the city will read more than 94 words per​ minute? The probability is ___ ​(Round to four decimal places as​ needed.) ​(b) What is the probability that a random sample of 13 second grade students...
Suppose 51% of the students in a university are baseball players. If a sample of 773...
Suppose 51% of the students in a university are baseball players. If a sample of 773 students is selected, what is the probability that the sample proportion of baseball players will differ from the population proportion by more than 5%? Round your answer to four decimal places.
A telephone exchange operator assumes that 6% of the phone calls are wrong numbers. If the...
A telephone exchange operator assumes that 6% of the phone calls are wrong numbers. If the operator is correct, what is the probability that the proportion of wrong numbers in a sample of 758 phone calls would be greater than 7% ? Round your answer to four decimal places.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT