Test the claim that the proportion of people who own cats is significantly different than 90% at the 0.1 significance level.

the null and alternative hypothesis would be:

a. h0: p≥0.9h0: p≥0.9
h1: p< 0.9h1: p< 0.9

b. h0: p=0.9h0: p=0.9
h1: p≠0.9h1: p≠0.9

c. h0: p≤0.9h0: p≤0.9
h1: p> 0.9h1: p> 0.9

d. h0: μ=0.9h0: μ=0.9
h1: μ≠0.9h1: μ≠0.9

e. h0: μ≤0.9h0: μ≤0.9
h1: μ> 0.9h1: μ> 0.9

f. h0: μ≥0.9h0: μ≥0.9
h1: μ< 0.9h1: μ< 0.9

the test is: a. left-tailedb. two-tailedc. right-tailed

The right answer is Option B:

Step-by-step explanation:

In this case we have to perform a hypothesis test on the proportion of the people owning cats.

The claim is that the proportion is significantly different than 905, what means it can be greater or smaller than 90% to reject the null hypothesis. Because of that, the null hypothesis has to state an equality (H0:p=0.9).

The right answer is Option B:

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

55% are girls and 45% are boys : ) hope this

step-by-step explanation: