Mathematics, 29.03.2021 18:40 laequity3393
The compressive strength of concrete is being tested by a civil engineer. She tests 14 specimens and obtains the following data (in psi): 2219 2248 2241 2228 2276 2287 2245 2247 2245 2297 2272 2246 2270 2263 Assuming that the compressive strength is normally distributed, test the hypothesis that the mean strength is at least 2249 psi. Report your P-value and use a 95% confidence level to draw your conclusion. P-value .1296 (a) Cannot Reject (b) Reject Now assume that the compressive strength is not normally distributed, and test the hypothesis that the median strength is greater than 2254 psi. Report your P-value and use a 95% confidence level to draw your conclusion. Hint: if the median is 2254 psi, then you can count how many of the samples have strengths above and below that value. And if you view the data as being either above or below the median, you can calculate the related P-value. P-value number (rtol
Answers: 3
Mathematics, 21.06.2019 20:50
Determine the common ratio and find the next three terms of the geometric sequence. 649-14-02-00-00_files/i0100000, 649-14-02-00-00_files/i0100001, 2, a. 3; 649-14-02-00-00_files/i0100002, 649-14-02-00-00_files/i0100003, 649-14-02-00-00_files/i0100004. c. 649-14-02-00-00_files/i0100005; 649-14-02-00-00_files/i0100006, 649-14-02-00-00_files/i0100007, 649-14-02-00-00_files/i0100008. b. 3; 6, 18, 54 d. 649-14-02-00-00_files/i0100009. 6, 18, 54 select the best answer from the choices provided a b c d
Answers: 1
Mathematics, 21.06.2019 23:00
Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?
Answers: 1
The compressive strength of concrete is being tested by a civil engineer. She tests 14 specimens and...
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