Juan has a sandbox and wants to double the length, width and height. If the original box holds 1 cubic foot of sand, how many more feet of sand must be added to fill up the new box.
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 23 subjects had a mean wake time of 92.1 min and a standard deviation of 40.5 min. Assume that the 23 sample values appear to be from a normally distributed population and construct a 98% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the treatment is effective?
The supermarket has 15 aisles. 20% are empty, without any shoppers. How many empty aisles are there in the supermarket?
Step 1: Enter the data in Statcrunch. Step 2: Click the menu sequence Stat -›T Stats One Sample - With Data. o Populations Standard Deviation Unknown • Step 3: In the One Sample window that displays: O In the Select columns box, select ages. o In the Perform section, select Confidence Interval. In the Level box, type 0.98. O Click Compute to display the confidence interval. Step 4: Show all work clearly by stating the confidence interval and interpret the meaning of the 98% confidence interval you just computed.
Write the standard form of the equation of the line passing through (-5, 1) and is parallel to y = -2/5x -5
4. The drama club is printing t-shirts for its members. The printing company chargesa certain amount for each shirt plus a setup fee of $40. There are 21 students in the drama club. a. If there are 21 students in the club and the t-shirt order costs a total of $187, how much does each t-shirt cost? Show your reasoning.
A right triangle's hypotenuse is 1 cm longer than twice the length of the shortest side. The third side is 1 cm less than twice the shortest side. Find the length (in cm) of the hypotenuse.
Members of the student government are planning a movie night on campus. They have asked a random sample of students which of four movies the student would prefer. Here are the results Movie A- 31 students, Movie B- 27 students, Movie C- 34 students, Movie D- 28 students. There are 900 students total on campus. Based on the above information, how many students on campus would we expect to prefer Movie C? Round your answer to the nearest whole number. Do not round any intermediate calculations
Juan has a sandbox and wants to double the length, width and height. if the original box holds 1 cubic foot of sand, how many more cubic feet of sand must be added to fill the box
