In january 2002, two students made worldwide headlines by spinning a belgian euro 250 times and getting 140 heads—that’s 56%. that makes the 90% confidence interval (51%, 61%). what does this mean? are these conclusions correct? explain.

Answer with explanation:

The 90% confidence interval (51%, 61%) for proportion means that the proportion of getting heads lie in it.

Given : Total number of times coin is tossed = 250

Number of times they got head =140

The probability of getting a head = 0.56

The confidence interval for proportion is given by :-

Given significance level :

Critical value :

Now, the 90% confidence interval for proportion will be :-

Hence, the given confidence interval is correct.

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

step-by-step explanation: