The lengths of pregnancies in a small rural village are normally distributed with a mean of 269 days and a standard deviation of 17 days. A distribution of values is normal with a mean of 269 and a standard deviation of 17. What percentage of pregnancies last fewer than 272 days? P(X < 272 days) = % Enter your answer as a percent accurate to 1 decimal place (do not enter the "%" sign). Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

Q: Find the IQ Score.  IQ score  0.3446 Distributed with a mean of 100 and a standard deviation of 15.…

A: Given DataMean = 100Standard deviation = 15Probability of IQ score of adults = 0.3446

Q: A distribution of values is normal with a mean of 123.2 and a standard deviation of 62 Find P35,…

A: Given: A distribution of values is normal with  μ=123.2 , σ=62

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 266.9…

A: Given: μ=266.9σ=15.4α=1-0.68=0.32

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1025 h with a…

A: Mean = 1025 Standard deviation = 85 Raw score = 950

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: normal distribution has a mean of 136 and a standard deviation of 4. Find the z-score for a data…

A: given data, normal distribution μ=136σ=4z score for a data value of 132=?

Q: A normal distribution has a mean of 150 and a standard deviation of 8. Find the z-score for a data…

A: The objective of this question is to find the z-score for a data value of 151 in a normal…

Q: A normal distribution has a mean of 81 and a standard deviation of 4. Find the z-score for a data…

A:

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: By empirical rule, 68% of data falls within one standard deviation. Thus, based on given info,…

Q: A normal distribution of scores has a mean of 72 and a standard deviation of 11.  Find the z-scores…

A: Problem 1:Given:μ = mean = 72σ = standard deviation = 11 We can solve for z-scores using this…

Q: Human pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15…

A: The mean is 267 days and the standard deviation is 15 days.

Q: A distribution of values is normal with a mean of 163.1 and a standard deviation of 74.5.

A: From the given information, the mean is 163.1 and standard deviation is 74.5. Need to fine P12. That…

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 h with a…

A: Given :- A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026…

Q: A distribution of values is normal with a mean of 204.2 and a standard deviation of 39.2. Find P84,…

A: Given: A distribution of value is normal with mean of 204.2 A standard deviation of 39.2 It is…

Q: A distribution of values is normal with a mean of 187.9 and a standard deviation of 71.2. Find P80,…

A:

Q: ly normal and has a standard deviation of 88% of students scored above a 800. What is the mean of

A: The mean of the binomial random variable obtained by the formula μ=np, where (n) is the number of…

Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 4079  and a standard…

A:

Q: On an exam with a mean of M=39, you obtain a score of X=35. Would you prefer a standard deviation…

A: Given that, Mean M =39 X=35, prefer a standard deviation of s= 2 or s=8:

Q: IQ is normally distributed with a mean of 100 (SD = 15). What score would a person need to be in the…

A: Let X denote the IQ scores and it follows normal distribution with mean of 100 and standard…

Q: Scores had a Mean of 82 and a Standard Deviation of 5 0. Find a z score for x =81 and x = 68 Z-…

A:

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: A normal distribution has a mean of 87 and a standard deviation of 10. Find the z-score for a data…

A: Given that, Mean = 87 Standard deviation = 10

Q: $12 O $4 Figure 1 - CDF of Amount Spent on a Meal at a Diner O $16 cdf $8 1.0 0.8 0.52 What is the…

A: Central tendency is a measure of a variable that clusters around a central value that represents the…

Q: A normal distribution has a mean of 148 and a standard deviation of 5. Find the z-score for a data…

A: Solution: Let X be the data value. From given information, X has mean µ=148 and a standard deviation…

Q: Scores on an exam were normally distributed. Ten percent of the scores were below 60.0 and 80% were…

A:

Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 213  and a standard…

A: For a sample point x, the corresponding z-score is given by    z = (x - )/ Where,  = mean of the…

Q: A normal distribution has a mean of 140 and a standard deviation of 7. Find the z-score for a data…

A:

Q: A normal distribution has a mean of 85 and a standard deviation of 6. Find the z-score for a data…

A: We have given that Mean(µ) = 85Standard deviations (σ) = 6X ~ N (µ, σ )= N(85, 4) The z-score for…

Q: The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

A:

Q: The distribution of heights in a population of women is approximately normal. Sixteen percent of the…

A: given data  normal distribution empirical rule: approximately 68 -95 -99.7% data fall within 1σ…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of​ adults, and those scores…

A:

Q: A distribution of values is normal with a mean of 120 and a standard deviation of 4. Find the…

A: Let us denote X= the variable Given that X follows a normal distribution with mean=120 and standard…

Q: A distribution of values is normal with a mean of 197.6 and a standard deviation of 24.6. Find P40,…

A: Given that X denotes the value of the distribution that follows normal distribution  With mean=197.6…