Testing a hypothesis.
A Baker says they can make a cake in 60 minutes from scratch, which I do not think he can.
After watching them 18 times I come up with the Mean time of 65.37 minutes with a standard deviation of 8.2 minutes
Using the Student's t Distribution because I have a small sample,
I'll let my null hypothesis be:
Ho: m = 60 and since I want to prove that his mean time is greater than the 60 minutes,
I'll set up my alternate hypothesis like this:
H1: µ > 60
If I find my sample "test statistic" and then test it against the critical value, I can determine, once and for all whether I can safely reject the bakers's claim.
I think that an alpha of 0.05 should be adequate.
--------------------------------------------
Input the key figures then indicate whether or not to reject Ho.
1. tc =
2. t =
3. Reject or Fail to reject Ho.
- Plain text response
- Your Information is Secure
- Best Online Academic Help Service
- Students find real academic Success
- Stating Hypothesis - Recently the national average yield on municipal bonds has been μ = 4.19%. A random sample of 16 Arizona municipal bonds gave an average yield of 5.11% with a sample standard deviation s = 1.15% ...
- Hypthesis Testing - XYZ Tv news in a segment on the price of gasolin, reported last evening that the mean price nationwide is $ 1.50 jper gallon for self-serve regular unleaded. A rando sample of 35 statations in the Glo ...
- null and alternate hypothesis - 6. The manufacturer of a particular all-season tire claims that the tires last for 22,000 miles. After purchasing the tires you discover that yours did not last the full 22,000 miles. Suppose that ...
- Null and Alternate Hypothesis - According to the U.S. federal Highway Administration, the mean number of miles driven annually is µ=12,200. An insurance agent in Montana believes that the mean number of miles driven by the residents ...
- Hypothesis Testing - Population Mean - A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute. The quality assurance dept found in a sample o ...
