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- Question 16 -DNo. Date 3) The table below as hows the freguency distribution of bot tery lifeopia 0 d aoittog o de Feregweney Distribution of car Battery Life Ct Years)te botin ullouto trobiang lio class Interval toolor Frequencylo ob 200 wow 2 Mith the 61-06 2-0-2.4 3 2-S 2.9 11 Co Babcu 3.0-3.4 tnolowta to la edT 2ewmite lopalli os opel to 2N t tcdn amobut 1S 3.5 3.9olla ttr o o to 22,p1 oe ni ballong 2inobuts tobetdin 4.0- 4.4 S 4.5- 4.9 lamoz sitito Erbjor lamoa troinov lgams no solutieon is a no point item.d Show the necessary computations when neededl ba) Find the mesn, imealian and the stendlord deviation of the dlato tlaimia alli caien 6 Find the interquartile range .2tnobwtalio 2N/o ot c Describe the shape of the distribution. 1f skewed, find the coefficierrt of skewness d construct a histogram for these data.QUESTION 8 Nabisco claims that Chip Ahoy Cookies have an x ̅=28.67 chocolate chips per cookie with a SD=2.67. You randomly select 15 cookies from a new bag and carefully remove all the chocolate chips from each of the 36 cookies. You find the mean of the chocolate chips for the 15 cookies is 24.27 chocolate chips per cookie. Calculate the standard error for the chocolate chips in your experiment. (round to the nearest hundredth).
- Question 8 If X is normally distributed with a mean of 30 and a standard deviation of 2, find P(30 < X < 33.4). a) O 0.455 b) O 0.855 c) O 0.955 d) 0 0.555 e) O 0.755 f) O None of the above Review LaterQuestion 20 <. Los Angeles workers have an average commute of 32 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 14 minutes. Let X represent the commute time for a randomly selected LA worker. a. What is the distribution of X? X N( b. Find the probability that a randomly selected LA worker has a commute that is longer than 33 minutes. Round to 4 decimal places. c. Find the 85th percentile for the commute time of LA workers. Round to 2 decimal places. minutes Question Help: Written Example MMessage instructor Submit Question Jump to AnswerQuestion 9 Suppose that X is normally distributed with a mean of 40 and a standard deviation of 15. What is P(X> 52.45)? a) O 0.203 b) O 0.597 c) O 0.206 d) O 0.297 e) O 0.207 f). O None of the above
- Kk.326.Question 2: If X is normally distributed with mean 32 and standard deviation 4. Find the probability that xis at least 36?Question 5 Find the 82 -th percentile for a uniform random variable U with the lower limit 17 and the upper limit 21. The 82 -th percentile for U is (Round the answer to 2 decimal places)
- Question 2. A simple random sample of size n = 49 is obtained from a population with mean 80 and standard deviation 14. a. Describe the sampling distribution of x. b. What is P (x >83) c. What is P(x ≤ 75.8) d. What is P (78.3 < x < 85.1)Question 10 The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 68 minutes and a standard deviation of 15 minutes. Suppose one person at the hot springs is-randomly chosen. Let X = the amount of time that person spent at Grover Hot Springs. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( b. Find the probability that a randomly selected person at the hot springs stays longer then 87 minutes. c. The park service is considering offering a discount for the 8% of their patrons who spend the least time at the hot springs. What is the longest amount of time a patron can spend at the hot springs and still receive the discount? minutes. d. Find the Inter Quartile Range (IQR) for time spent at the hot springs. Q1: Eminutes Q3: minutes IQR: minutes Submit Question Rain. 16 IOI & 2$4 5. L. 8 P E R T Y UQuestion 1 Suppose the shaded area (which is 0.89) is to the left of the STS of a x test. Find the P-value for a: a. Left-tailed test: b. Right-tailed test: c. Two-tailed test: Submit Question MacBook Air