.Find the standard deviation of -2, 7.2, 6.9, -10.4, 5.3 6 .a .b O 7.CO 6.78 .d O 6.9
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- The mean for statistics test scores is 61 and the standard deviation is 6.0. For the biology test scores, the mean is 22 and the standard devaton is 3.7. The tent scores of stutent who took boh tests are ven belw A student gets a 74 on the statistics test and a 24 on the biology test. (a) Tranaform each test score to a z-Bcore. (b) Determine on which test the student had a better score (a) Transform the statistios test soore to a z-acore. (Type an integer or decimal rounded to the nearest hundredth as needed.)2. A normally distributed variable has a mean of 75 and a standard deviation of 2. What is the z-score for 73?A –3 B –1 C 1 D 3I need the answer as soon as possible
- Use the display of data to find the standard deviation (do not round until the final answer, then round to the nearest hundredth as needed)At King Kong High School, the average weight of senior boys is 168 lbs. with a standard deviation of 7 lbs. the average weight for senior girls is 117 lbs. with a standard deviation of 5 lbs. Suppose a new distribution is created by adding the boys' weights and the girls' weights together. assuming that the weights for boys and girls are independent, which of the following is true? I. the mean of this new distribution is 168+117 II. The standard deviation of this new distribution is 5+7 III. The variance of this new distribution is 5^2+7^2The scores on a test are normally distributed with a mean of 100 and a standard deviation of moms p statemer 20. What is the score that is 2- standard deviations below the mean? A score of is 2- standard deviations below the mean. Time Remaining: 01:38:19 Next APR 10 MacBook F
- Find the standard deviation for the group of data items. Stems Leaves 0 877858 3302 The standard deviation is (Round to two decimal places as needed.)I have provided the answer. Please explain the answer.I24. How does the t distribution differ from the Z distribution? a. It has a smaller standard deviation and hence thinner tails than the Z distribution. b. It has a larger standard deviation and hence thicker tails than the Z distribution. c. The t and Z distributions are no different.
- llustration 17.8. For a binomial distribution the mean is 6 and standard deviation is 2. Write out all the terms of the distri- bution.n=16 mean number of television per household is 4 with a standard deviation of 1 television. using chebychev's theorem, detemine at least how many households have between 2 and 6 television.number 7 and 8 pls
