SAT Scores The national average SAT score (for verbal and math) is 1028. Suppose that nothing is known about the shape of the distribution and that the standard deviation is 100. Round the final answer to at least four decimal places and intermediate z- value calculations to two decimal places. Part: 0 / 2 Part 1 of 2 If a random sample of 230 scores was selected, find the probability that the sample mean is greater than 1045. Assume that the sample is taken from a large population and the correction factor can be ignored. P(X> 1045)= =

An additional data value is added to a dataset. The new value is far below the rest of the data. The standard deviation will decrease when this new value is added into the dataset. True False Suppose a certain drug causes kidney problems in 10% of patients, and this drug is to be tested on 55 patients. Find the standard deviation for the number of patients who will experience kidney problems.  2.2249 5.5 5.0 2.345

The scores of the Betropolis University Music Appreciation Exam are Normally Distributed with a mean of 50 and a standard deviation of 10; that is N(50, 10). A. Boris scored 40.6 and Bela scored 56.8. Find the percent of students who scored greater than Boris and less than Bela. Your answer should be correct to 4 places after the decimal point. ___________ B. 51% of the students score greater than Bernie. Find Bernie’s score. Your answer should be correct to 3 places after the decimal point. Bernie’s score was ___________

A-C please

Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 71 miles per​ hour, with a standard deviation of 5 miles per hour. Estimate the percent of vehicles whose speeds are between 61 miles per hour and 81 miles per hour.​ (Assume the data set has a​ bell-shaped distribution.)   Approximately ________ ​% of vehicles travel between 61 miles per hour and 81 miles per hour.

Determine whether the statement is true or false. If it is false, rewrite it as a true statement. As the size of a sample increases, the standard deviation of the distribution of sample means increases. Choose the correct choice below. C OA. This statement is false. A true statement is, "As the size of a sample increases, the standard deviation of the distribution of sample means decreases." OB. This statement is true. OC. This statement is false. A true statement is, "As the size of a sample decreases, the standard deviation of the distribution of sample means decreases." OD. This statement is false. A true statement is, "As the size of a sample increases, the standard deviation of the distribution of sample means does not change." Time Remaining: 01:26:37

Find the range, the standard deviation, and the variance for the given sample. Round non-integer results to the nearest tenth. 3, 4, 4, 5, 5, 6, 15 range       standard deviation       variance

SAT Scores The national average SAT score (for verbal and math) is 1028. Suppose that nothing is known about the shape of the distribution and that the standard deviation is 100. Round the final answer to at least four decimal places and intermediate z-value calculations to two decimal places. Part: 0/ 2 Part 1 of 2 If a random sample of 225 scores was selected, find the probability that the sample mean is greater than 1051. Assume that the sample is taken from a large population and the correction factor can be ignored. P(x> 1051) = O

Renee scores an average of 198 points in a game of bowling, and the points are normally distributed. Suppose Renee scores 224 points in a game and this value has a z-score of 2. What is the standard deviation? Provide your answer below: points