Suppose that the age of students at George Washington Elementary school is uniformly distributed between 6 and 11 years old. 43 randomly selected children from the school are asked their age. Round all answers to 4 decimal places where possible a. What is the distribution of X? X U( b. What is the distribution of ? & ~ N( c. What is the probability that the average of 43 children will be between 8 and 8.4 years old?

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 71 mph and…

A: Since you have asked multiple questions, we will solve first question for you. If you want any…

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Q: Suppose Colleen works two jobs. At job A, Colleen’s monthly earnings can be described by the…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 65 mph and…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 65 mph and…

A: It is given that the mean and standard deviation are 65 and 8, respectively.

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A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

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Q: Rosa surveys 53 students at random to determine the proportion of students who have attended Mt. San…

A: Given Information:  Sample size (n) = 53 students Proportion (p) = 0.53

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 70 mph and…

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 67 mph and…

A: From the given information, the value of mean 67 mph and standard deviation 10 miles per hour. Here,…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 70 mph and…

A: Given Mean=mu=70 Standard deviation=sigma=10

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Q: An airliner caries 300 passengers and has doors with a height of 70 in. Heights of men are normally…

A: =PX-μσ<70-69.02.8 =PZ<0.3571 Draw the normal curve and shade the area to the left of z=0.3571.…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 75 mph and…

A: (d) Determine the speed on the freeway if at least75% of all cars travel. The speed on the freeway…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 68 mph and…

A: Given: μ=68  & σ=10         Part b: The required probability is                    P(X≥67)=…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 67 mph and…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 78 mph and…

A: Here, X is the speed for a randomly selected car. a.) Here, X ~N( 78, 92), i.e., X~ N( 78, 81)…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 72 mph and…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: According to a study done by De Anza students, the height for Asian adult males is normally…

A: According to a study done by De Anza students, the height for Asian adult males is normally…

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A: [NOTE : As per the rules only the first three sub-parts are solved.]   Given that, The speed at…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 79 mph and…

A: As per our guideline expert have to answer first question only...dear student please upload other…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 78 mph and…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 80 mph and…

A: Considering μ as the mean speed of all cars (at a population level) and σ as the standard deviation…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 75 mph and…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 73 mph and…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

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A: Given: p=0.34 n=1000

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 80 mph and…

A: Note: Please repost part d as i can answer only 3 subparts as per my policy.   Given data, μ=80σ=5

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 78 mph and…

A: Let X be the speed for a randomly selected car.  The random variable X follows normal distribution…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 67 mph and…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 80 mph and…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 80 mph and…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 73 mph and…

A: Let X denote the speed for a randomly selected car and it follows normal distribution with mean μ=73…

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A: Solution