Homework 5 Speech or Presentation Example | Topics and Well Written Essays - 500 words

Homework 5 - Speech or Presentation Example2) Historically, the average amount of time to assemble an electronic component on a production line has been 14 legal proceeding. The supervisor of this production line is kindle in determining whether this is no longer true. Assume that assembly time is normally distributed with a known population standard divergence of 3.4 minutes. The supervisor times the assembly of 25 randomly chosen components, and finds that the average time to assemble is 12.6 minutes. Is at that place sufficient deduction to suggest that the population mean assembly time is not 14 minutes at the 1% level of significance? What is the p-value?3) The manufacturer of a new chewing gum asserts that at least 80% of dentists prefer their type of gum. An independent consumer research firm decides to test their claim. The findings of a take in of 200 dentists indicate that 76% of respondents actually prefer the manufacturers gum. At the 5% level, is there sufficient e vidence to suggest that the population proportion of dentists who prefer the manufacturers gum is less than 80%? What is the p-value?4) A college professor is interested in determining the relationship between the number of hours a student sleeps prior to an exam and a students exam grade. The joint distribution is assumed bivariate normal. The professor draws a random sample of four students and records each students exam grade and hours of sleep preceding the exam. These data are found in the carry over below.The professor runs a simple regression, but has misplaced her regression output. Recognizing that Exam Grade is the dependent inconstant and Hours of Sleep is the sole independent variable, she asks you to perform the