A certain group of test subjects had pulse rates with a mean of 75.3 beats per minute and a standard deviation of 13.2beats per minute. Use the range rule of thumb to identify the limits separating values that are significantly low or significantly high. Is a pulse rate of 151.7 beats per minute significantly low or significantly​ high? 1- Significantly low values are __ beats per minute or lower. 2- Significantly high values are __ beats per minute or higher

Q: A set of 10 scores has a standard deviation of 8. What is the sum of squares?

A: Given,Number of scores = 10Standard deviation = 8Using formulas,For population, For sample,

Q: Why is the standard deviation preferable to the range as a measure of variation?

A: A range is the most common and easily understandable measure of dispersion. It is the difference…

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A: μ  = 506 , σ = 100  Z~ N(0,1)

Q: A certain group of test subjects had pulse rates with a mean of 75.6beats per minute and a standard…

A: Lower limit = mean - 2SD Upper limit = mean + 2SD

Q: Suppose the exam average in a class is 82% with a standard deviation of 6. What proportion of…

A:

Q: Assume that the number of pieces per bag has a mean of 264 with a standard deviation of 3. use the…

A: Given :  the number of pieces per bag has a mean of , μ=264  a standard deviation of , σ =3   We…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: A teacher says that the top 9​% of the class received an A on the last test. The scores were…

A: Given that the mean is 67 and the standard deviation is 18. That is, μ=67, σ=18 A teacher says that…

Q: A certain group of test subjects had pulse rates with a mean of 74.6 beats per minute and a standard…

A: Given: mean=74.6standard deviation=10.5

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…

A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

Q: Assume that the amount of time a person experiences cold virus symptoms are normally distributed…

A: Given data Mean = 7.5 days  Standard deviation  = 1.5d days To find: What proportion of cold…

Q: Use Chebyshev's Theorem to find what percent of the values will fall between 120 and 150 for a data…

A: The percentage of observations that are within k std dev. of the mean is 100(1-1k2)%

Q: Each year students in a local school district write a national examination. The average on this…

A: Average of a dataset is the mean value of the observations in the data and it is computed by…

Q: How high must a 2016 Vehicles gas mileage be to fall in the top 15% of all vehicles? normal mean is…

A: Given information: normal mean is 23.0mpg standard deviation is 4.9mpg

Q: Suppose the exam average in a class is 82% with a standard deviation of 2. What proportion of…

A:

Q: It is possible to have a standard deviation of -1 for some data set? True or False

A: See the below solution

Q: What proportion of people has diastolic blood pressure less than 80?

A:

Q: standardized test has a pop. mean of 152 and a standard deviation of 16. Jenny has a z score of…

A: Given that n=500, z=-0.56

Q: The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for…

A: It is given that the mean test score and standard deviation for history test are 63 and 9, the mean…

Q: What is the mean absolute deviation of 1, 5, 8, & 10? Show your solution

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: The mean of a data ser is 70. The standard deviation is 2. Between what Value is 95% of data found…

A:

Q: Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: A particular fruit's weights are normally distributed, with a mean of 613 grams and a standard…

A:

Q: Each year students in a local school district write a national examination. The average on this…

A: Given data Mean = 150 Standard deviation=20

Q: Suppose the mean length of songs played on a radio station is 190 seconds with a standard deviation…

A:

Q: The difference in the population means divided by the population standard deviation of a study is…

A: Given that The difference in the population means divided by the population standard deviation

Q: Suppose the exam average in a class is 55% with a standard deviation of 4. What proportion of…

A: The random variable score follows normal distribution. The population mean is 55.         The…

Q: standardized test has a pop. mean of 152 and a standard deviation of 16. What would be the median…

A: Given that Mean=M=152, Standard Deviation=Sd=16 X~N(M=152,Sd=16)

Q: An exam score has a mean of 504 and standard deviation of 90.  What exam score coresponds to a…

A: given data, An exam score has a mean of 504μ=504standard deviation of 90.σ=90  exam score(x)…