Question
The following 5 questions are based on this information. Historically, the average number of boats owned by the people living in the coasts in a
The following 5 questions are based on this information.
Historically, the average number of boats owned by the people living in the coasts in a lifetime has been 12. An economist believes that the number is now lower because of recent economic downturns. A recent survey of 30 senior citizens indicates that the average number of boats owned over their lifetime is 10.
Assume that the random variable, number of boats owned in a lifetime (denoted by X), is normally distributed with a standard deviation ()is4.5.
1)Specify the null and alternative hypotheses.
2)The standard error (SE) of X is
3)The p-value is
4) The test statistics value is
5) At=0.10 and using the p-value reject?
please show step by step, equations . dumbproof it to the best of your ability
please dont type like this
P[ |X(bar)-| <25]
=P[ |(X(bar)-)/(/sqrt(n))| <25>
=P [ |Z|<2.678]
=P(-2.678 =P(Z<2.678)-P(Z<-2.678)
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