Elementary school: In a certain elementary school, 58% of the students are girls. A sample of 65 students is drawn. Use the Cumulative Normal Distribution Table or technology. Round your answer to four decimal places. (a)What is the probability that more than 60% of them are girls? (b)Would it be unusual for more than 70% of them to be girls? ▼(Choose one(Yes/No)), it ▼(Choose one(Would/Would not)) be unusual. Image attached bellow for better view of question

Elementary school: In a certain elementary school, 58% of the students are girls. A sample of 65 students is drawn. Use the Cumulative Normal Distribution Table or technology. Round your answer to four decimal places. (a)What is the probability that more than 60% of them are girls? (b)Would it be unusual for more than 70% of them to be girls? ▼(Choose one(Yes/No)), it ▼(Choose one(Would/Would not)) be unusual. Image attached bellow for better view of question

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.3: Special Probability Density Functions

Problem 52E

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Question

Elementary school: In a certain elementary school, 58% of the students are girls. A sample of 65 students is drawn. Use the Cumulative Normal Distribution Table or technology. Round your answer to four decimal places.

(a)What is the probability that more than 60% of them are girls?

(b)Would it be unusual for more than 70% of them to be girls?

▼(Choose one(Yes/No)), it ▼(Choose one(Would/Would not)) be unusual.

Image attached bellow for better view of question

Elementary school: In a certain elementary school, 58% of the students are girls. A sample of 65 students is drawn. Use the
→ Cumulative Normal Distribution Table or technology. Round your answer to four decimal places.
Part: 0 / 2
Part 1 of 2
(a) What is the probability that more than 60% of them are girls?
The probability that more than 60% of them are girls is
Part: 1 / 2
Part 2 of 2
(b) Would it be unusual for more than 70% of them to be girls?
(Choose one) it (Choose one) be unusual.
X
X
Ś
Ś

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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