7) Reading Rates. The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard deviation of 24 words per minute. a) Label the normal curve below with the appropriate parameters describing the reading speed of sixth-grade students. In parts b-e use, describe each probability using the appropriate notation. b) Find and interpret the probability that a randomly selected sixth-grade student reads less than 100 words per minute. c) Find and interpret the probability that a randomly selected sixth-grade student reads more than 140 words per minute. d) Find and interpret the probability that a randomly selected sixth-grade student reads between 110 and 130 words per minute. e) Would it be unusual for a sixth grader to read more than 200 words per minute. if they cannot both occur. 5) If events A and B are disjoint, P (E or F) = 6) If two events are not disjoint, P (E or F) = 7) What is the multiplica 4| Page

Q: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation…

A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.34%. A random sample of 31 of…

A:

Q: The p-value… is used to determine the Margin Of Error measures the number of standard deviations…

A: p value is a probabilty  which indicates the decision about null hypothesis assuming true  so that…

Q: Exercise 1: The weight of a random scone sold by your favorite bakery has a mean of 105g I a…

A: Given: μ = 105 σ = 5 Formula Used: Z-score= X-μσn

Q: Michelle, a telemarketer makes six phone calls per hour and is able to make a sale on 30% of these…

A: The random variable X is making sales. The number of cars per hour is 6. The probability of making a…

Q: A student takes a multiple choice exam with 10 questions, each with four possible selections for the…

A: Given that, A student takes a multiple choice exam with 10 questions, each with four possible…

Q: The population average annual salary for high school teachers in Alhambra is $61,244. A random…

A:

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300⁢lbs and the…

A:

Q: Calculate the probability that one of the next 6,827 times the slot machine is played, a jackpot is…

A: Here given ,  The chance of winning a jackpot on a certain slot machine is 1/17500​  . Next 6827…

Q: The length of time it takes college students to find a parking spot in the library parking lot…

A:

Q: According to The World Bank, only 9% of the population of Uganda had access to electricity as of…

A:

Q: Blood glucose levels are normally distributed with a mean of 85 mg/dl and a standard deviation of 25…

A: Answer: Given that:   ‘x’ is Normally distributed with                 Mean  µ =85       standard…

Q: There are 20 crew members at a given university. You want to calculate the probability that their…

A: The question is about sampling distribution.Given :Selected no. of crew members ( n ) = 20Population…

Q: The average speed of cars passing a checkpoint is 60 miles per hour with a standard deviation of 8…

A: From the provided information,n = 50

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

A: Given information:

Q: Trucks in a delivery fleet travel a mean of 130 miles per day with a standard deviation of 39 miles…

A: The data on per day mileage of a delivery truck is normally distributed. Population mean, Population…

Q: If a probability or 2 place decimal like area is found to be 077 or - 1.09 0.4377, what is the z…

A:

Q: Billiard tables have mean degree of balance 0 and standard deviation 1. What is the probability…

A: It is given that the degree of balance is normally distributed with mean 0 and standard deviation is…

Q: Michelle, a telemarketer makes six phone calls per hour and is able to make a sale on 30% of these…

A: The question is about discrete probability distribution Given : No. phone call telemarketers makes…

Q: A voin is tossed four times. Let x denote the number of heads. Find the mean and standard deviation…

A: A coin is tossed four times. The  denotes the number of heads.

Q: The reading speed of second grade students in a large city is approximately normal, with a mean of…

A: (B) Let X be the random variable from normal distribution with mean (μ) = 88, standard deviation (σ)…

Q: Use a formula to find the standard deviation of the sample 1, 4, 5, 6.

A: We have given that,  The data set of the sample is,  1, 4, 5, 6 Then,  We will find the standard…

Q: If X is a number on standard dice roll, find the standard deviation (o) of X.

A: The random variable is a number on a standard dice roll.If a standard die is rolled, then its…

Q: Billiard tables have mean degree of balance 0 and standard deviation 1 What is the probability…

A: It is given that the mean and standard deviation are 0 and 1.

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: Suppose that the number of hours that an adult watches in a day has a mean of 2.4 hours and a…

A: Given: i. Calculate the corresponding Z score as follows: The diagram corresponding to the mean…

Q: Find the probability that the mean for 20 randomly selected distances is greater than 195.70 cm.

A: Given that.   X~N( μ , ?)   μ=197.5     , ?=8.9   Z-score =( x - μ )/?

Q: 1, the mean number of goldfish in the package is 187. find the probability of choosing a package…

A: Thanks for posting the question. Since multiple questions are posted, we will answer one question…

Q: You play a game of chance that you can either win or lose (there are no other possibilities) until…

A: Probability of losing (p) the game is 0.61 Probability of winning the game = 1- p = 1- 0.61=0.39