Express the confidence interval 819.5±135.9 in interval form. Express the answer in either decimal format or as percents.

Submit qu Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and standard deviation o = 20. Find the probability that a randomly selected adult has an IQ between 89 and 111. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 89 and 111 is (Type an integer or decimal rounded to four decimal places as needed.)

The board of examiners that administers the real estate brokerʹs examination in a certain state found that the mean score on the test was 494 and the standard deviation was 72. If the board wants to set the passing score so that only the best 10% of all applicants pass, what is the passing score? Assume that the scores are normally distributed. Round to the nearest whole number.

ents are made of the length of a piece of metal with a Vernier caliper. 11 values are 8.95 0.05 mm, 8.90 ± 0.05 mm, 8.85 + 0.05 mm, 8.60 ± 0.05 mm, 8.90 + 0.05 mm. Determine the mean and the uncertainty for this set of data. Use th for mean and standard deviation on your personal calculator to help you perfonn State the brand and model number of your calculator and give a brief description of win on your model calculator to utilize these tools.