A sample data Xhas a mean of 14 and a standard deviation of 5. 1. The z-score of the X-value 19 is O 0.2 O 1 O 0.5 O -0.5 O -1 O -0.2 2. The value X=19 is considered as Oan outlier Onot an outlier
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- Air handling: The mean lifetime of a handheld leaf blower is reported to be 250 hours. A lawncare technician believes the actual lifetime to be less than 250 hours. A test is made of Ho:u=250 versus H₁ u<250. The null hypothesis is rejected. State an appropriate conclusion. There (Choose one) enough evidence to conclude that the mean lifetime is (Choose one) ▼250 hours. X 5 00 BAssume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P( – b < Z < b) = 0.7062, find b. Round your answer to 2 decimals. b =Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1.If P(−0.9<z<b) = 0.5607, find b.
- Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 2 The indicated IQ score, x, is. (Round to one decimal place as needed.) W S X H Saladin_25_Ext.pdf mand # 3 8.0 F F3 E D C $ 4 a FA R F Saladin9eAccess....pdf % 5 V T G 6 A B MacBook Air FO D Y H PBSC A&P 2 La....pptx & 7 8 F? U C... N 8 J DII FB 1 M Q PBSC A&P 2 La.....pptx ( 9 K O > O < I дв L F10 P Clear all command ; { = [ Check answer ? option 0.9 Show All 24 DO x I 1 \ delConsider a value to be significantly low if its z score less than or equal to -2 or consider a value to be significantly high if its z score is greater than or equal to 2. A data set lists weights (grams) of a type of coin. Those weights have a mean of 5.30979 g and a standard deviation of 0.06539 g. Identify the weights that are significantly low or significantly high. .BBE What weights are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. O A. Weights that are greater than (Round to five decimal places as needed.) O B. Weights that are between and (Round to five decimal places as needed. Use ascending order.) OCWeights that are less than (Round to five decimal places as needed.)Assume that a randomly selected subject is given a bone density test Those test scores are normally distributed with a mean of 0 and a standard deviation of 1 Draw a graph and find the bone density test scores that can be used as cutoff values separating the lowest 8% and highest 8%, indicating levels that are too low or too high, respectively S he regie Choose correct graph below. OB. OC. OD. The bone density scores are (Use a comma to separate answers as needed. Round to two decimal places as needed.)
- Assume that adults have IQ scores that are normally distributed with a mean of 102.1 and a standard deviation 16.3. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.)Pls help ASAP ASAP.Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1.If P(-b<z<b)=0.9716, find b.
- Plzz explain. With details.Consider a value to be significantly low if its z score less than or equal to - 2 or consider a value to be significantly high if its z score is greater than or equal to 2. A data set lists weights (grams) of a type of coin. Those weights have a mean of 5.62152 g and a standard deviation of 0.05197 g. Identify the weights that are significantly low or significantly high. What weights are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. O A. Weights that are greater than . (Round to five decimal places as needed.) (Round to five decimal places as needed.) B. Weights that are less than C. Weights that are between and. (Round to five decimal places as needed. Use ascending order.)Assume that adults have 1Q scores that are normally distributed with a mean of 103.1 and a standard deviation of 24.4. Find the probability that a randomly selected adult has an IQ greater than 131.3. (Hint: Drawa graph.) The probability that a randomly selected adult from this group has an IQ greater than 131.3 is (Round to four decimal places as needed.)