Question
Please I need help how to enter these in excel. and which hypothesis testing such a test, rt tail test etc 31) A study conducted
Please I need help how to enter these in excel. and which hypothesis testing such a test, rt tail test etc
31) A study conducted by the technology company TiVo showed that the mean time spent per day browsing the video streaming service Netflix for something to watch is 19.3 minutes.Assume the standard deviation is = 8 minutes.Suppose a simple random sample of 100 visits taken this year has a sample mean of 21.5 minutes.A social scientist is interested to know whether the mean time browsing Netflix has increased.Use a = 0.05.
32) A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can.The following are the amounts measured in a simple random sample of eight cans:
11.96, 12.10, 12.04, 12.13, 11.98, 12.05, 11.91, 12.03
At a = 0.1, test whether the mean amount differs from 12 ounces.Assume beverage amount is normally distributed.
33) The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credit risk.An economist wants to determine whether the mean FICO score is lower than the cutoff of 720.She finds a random sample of 75 people had a mean FICO score of 703 with a standard deviation of 92.Can the economist conclude that the mean FICO score is less than 720?Use a = 0.05.
34) A poll taken by the Software Usability Research Laboratory surveyed 341 video gamers, and 110 of them said that they prefer playing games on a console, rather than a computer or hand-held device.An executive at a game console manufacturing company claims that more than 25% of gamers prefer consoles. Does the poll provide evidence that the claim is true? Use a= 0.01.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started