Consider the following. (Give your answers correct to four decimal places.)
(a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65.
Incorrect: Your answer is incorrect. .
(b) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.93.
Incorrect: Your answer is incorrect. .
(c) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 2.17.
(d) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 2.41.
Can someone please help with these I have no ideal how to start and I also have missed placed my tables that I think will be needed. Really need help
To determine the level of confidence given the confidence coefficient, we need to consult a standard normal distribution table. This table provides the values of the cumulative distribution function (CDF) for different z-scores.
(a) For z(á/2) = 1.65, we need to find the level of confidence. To do this, we look up the z-score of 1.65 in the standard normal distribution table. The value CDF(1.65) gives us the area between the mean and 1.65 standard deviations to the right of the mean.
(b) For z(á/2) = 1.93, we need to find the level of confidence. Similarly, we look up the z-score of 1.93 in the standard normal distribution table to determine the corresponding CDF value.
(c) For z(á/2) = 2.17, again, we look up the z-score of 2.17 in the standard normal distribution table.
(d) Finally, for z(á/2) = 2.41, we look up the z-score of 2.41 in the standard normal distribution table.
Unfortunately, without access to the standard normal distribution table, I cannot provide the exact level of confidence for each confidence coefficient. However, you can use statistical software or online calculators to find these values. Alternatively, you can try to obtain another copy of the standard normal distribution table.