Mathematics, 25.11.2019 19:31, naenae6775
Rpub a company that manufactures light bulbs has advertised that its 75- watt bulbs burn an average of 800 hours before failing. in reaction to the company’s advertising campaign, several dissatisfied customers have complained to a consumer watchdog organization that they believe the company’s claim to be exaggerated. the consumer organization must decide whether or not to allocate some of its financial resources to countering the company’s advertising campaign. so that it can make an informed decision, it begins by purchasing and testing 100 of the disputed light bulbs. in this experiment, the 100 light bulbs burned an average of .x = 745.1 hours before failing, with a sample standard deviation of s = 238.0 hours. formulate null and alternative hypotheses that are appropriate for this situation. calculate a significance probability. do these results warrant rejecting the null hypothesis at a significance level of α = 0.05?
Answers: 2
Mathematics, 21.06.2019 17:30, jessied2000
What is not true about kl and mn? what is mn? (show your work)
Answers: 1
Mathematics, 21.06.2019 18:00, whaddup8428
Carmen begins her next painting on a rectangular canvas that is 82.7 cm long and has a area of 8,137.68 cm2. will the painting fit in a frame with an opening that is 82.7 cm long and 95 cm wide? explain
Answers: 3
Mathematics, 21.06.2019 19:10, madimocaj
Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?
Answers: 2
Mathematics, 21.06.2019 22:20, jimena15
As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is
Answers: 2
Rpub a company that manufactures light bulbs has advertised that its 75- watt bulbs burn an average...
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