Use a normal distribution to estimate the probability of more than 55 girls being born in...

Use a normal distribution to estimate the probability of more than 55 girls being born in 100 births. Assume that the probability of a girl being born in an individual birth is 50%.

Expert Solution

orchestra answered 2 years ago

Describe the point estimate, normal probability distribution, and standard normal probability distribution in details, in 4 paragraphs.

Empolyee age 1 25 2 32 3 26 4 40 5 50 6 54 7 22 8 23 age Mean 34 Standard Error 4.444097209 Median 29 Mode #N/A Standard Deviation 12.56980509 Sample Variance 158 Kurtosis -1.152221485 Skewness 0.767648041 Range 32 Minimum 22 Maximum 54 Sum 272 Count 8 Confidence Level(95.0%) 10.50862004 Describe the point estimate, normal probability distribution, and standard normal probability distribution in details, in 4 paragraphs.

1) If the boys and girls have the same probabilities of being born. What is the...

1) If the boys and girls have the same probabilities of being born. What is the probability that a family of 5 children selected randomly has atleast one boy? 2) Of the pieces produced by a machine in particular, 0.8% are defective. If an aleatory sample of 8 pieces produced by this machine contains two or more defective pieces, the machine will be turned off to make reparations. Find the probability that the machine would turn off for reparations based...

For a standard normal distribution, what is the probability that z is greater than 1.65

9. For a standard normal distribution, what is the probability that Z is greater than -1.35?...

9. For a standard normal distribution, what is the probability that Z is greater than -1.35? Round to four decimals and use leading zeros. 10. For a standard normal variable, what is the probability that Z is between -2.00 and -1.00? Round to four decimals and use leading zeros. 11. For a dataset that follows the standard normal distribution, what is the probability that Z is between 2.00 and 3.00? Round to four decimals and use leading zeros.

Use the normal distribution to approximate the desired probability. A certain question on a test is...

Use the normal distribution to approximate the desired probability. A certain question on a test is answered correctly by 24.0 percent of the respondents. Estimate the probability that among the next 166 responses there will be at most 43 correct answers. SELECT ALL APPLICABLE CHOICES A) 74.56870% B) 74.30203% C) 75.20203% D) 74.95203% E) 74.70203% F) None of the above

Why can we not use z values to estimate the mean for a normal distribution with...

Why can we not use z values to estimate the mean for a normal distribution with unknown standard deviation? As sample size n increases, does the variance of the corresponding t distribution increase or decrease? Why?

a) Find the probability of an individual being more extreme than 3.2 standard deviation from the...

a) Find the probability of an individual being more extreme than 3.2 standard deviation from the mean. b) Is this unusual? Select an answer Not unusual because the probability is high unusual because the probability is low unusual because the probability is high not unusual because the probability is low

(1 point) Use the Normal Approximation to the Binomial Distribution to compute the probability of passing...

(1 point) Use the Normal Approximation to the Binomial Distribution to compute the probability of passing a true/false test of 40 questions if the minimum passing grade is 90% and all responses are random guesses.

Use normal approximation to estimate the probability of passing a true/false test of 30 questions if...

Use normal approximation to estimate the probability of passing a true/false test of 30 questions if the minimum passing grade is 90% and all responses are random guesses.

Which of the following is NOT a characteristic of the normal probability distribution? a....

1. Which of the following is NOT a characteristic of the normal probability distribution? a. The distribution is symmetrical. b. The mean, median, and mode are equal. c. The standard deviation must be 1. d. The mean of the distribution can be negative, zero, or positive. 2. For a standard normal distribution, P(Z 0) is a. Zero b.one D c.0.5 d.HOS

Question