manufacturer of shampoo claims that 27% of the shampoo users prefer brand X. To test this claim, a random sample of 53 participants are selected and asked what brand they prefer. If 8 of the 53 participants prefer brand X, what conclusion do we draw? Use a 0.05 level of significance. What are the given? hypothesized proportion:____ sample proportion:____ (Write your answer in fraction form form and simplify your answer) sample size:____ level of significance:____ What are the critical values? Write the positve first then the negative z:____ and ____ What is the calculated z? Round your answer to the nearest hundredths. z:____
"A manufacturer of shampoo claims that 27% of the shampoo users prefer brand X. To test this claim, a random sample of 53 participants are selected and asked what brand they prefer. If 8 of the 53 participants prefer brand X, what conclusion do we draw? Use a 0.05 level of significance.
What are the given?
hypothesized proportion:____
sample proportion:____ (Write your answer in fraction form form and simplify your answer)
level of significance:____
What are the critical values? Write the positve first then the negative
z:____ and ____
What is the calculated z? Round your answer to the nearest hundredths.
z:____
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where did 0.025 come from? please explain the steps to get critical value
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