It is known that ABC University students have a normal distribution of average monthly study time...
It is known that ABC University students have a normal distribution of average monthly study time of 50 and variance of 49. What is the probability that 36 randomly selected students have an average monthly study time range between 49 and 52?
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It is known that ABC University students have a normal
distribution of average monthly study time...
The time college students spend on the internet follows a Normal distribution. At Johnson University, the...
The time college students spend on the internet follows a Normal distribution. At Johnson University, the mean time is 6 hours per day with a standard deviation of 1.5 hours per day. If 100 Johnson University students are randomly selected, what is the probability that the average time spent on the internet will be more than 6.2 hours per day? ____________ Round to 4 places. If 100 Johnson University students are randomly selected, what is the probability that the average...
A study was done to compare the amount of time per day students at public and...
A study was done to compare the amount of time per day students at public and private universities spend on Facebook. The study was composed of 200 students from a private university and 300 students from a public university. The time that students at a private university spent on Facebook had a Normal distribution with a mean of 220 minutes and a standard deviation of 36 minutes. The time that students at a public university spent on Facebook had a...
The time that university students spend on the internet follows a normal distribution. At flinders university,...
The time that university students spend on the internet follows a normal distribution. At flinders university, the mean time is 5 hours with a standard deviation of 1.2 hours. What is the probability that the average time 100 random students on campus willl spend more than 5 hours on the internet? a) 0.5 b) 1 c) 0.2 d) 0
A study was done to compare the amount of time per day students at public and...
A study was done to compare the amount of time per day students at public and private universities spend on Facebook. The study was composed of 200 students from a private university and 300 students from a public university. The time that students at a private university spent on Facebook had a Normal distribution with a mean of 220 minutes and a standard deviation of 36 minutes. The time that students at a public university spent on Facebook had a...
QUESTION 4 The GPAs of all students enrolled at a large university have an approximately normal...
QUESTION 4 The GPAs of all students enrolled at a large university have an approximately normal distribution with a mean of 3.05 and a standard deviation of 0.30. Find the probability that the mean GPA of a random sample of 49 students selected from this university is 2.75 or lower. Round your answer to four decimal places. Attach File
The average monthly mortgage payment for all homeowners in a city follows a normal distribution with...
The average monthly mortgage payment for all homeowners in a city follows a normal distribution with a mean of $2850 and a standard deviation of $420. Find the probability that the monthly mortgage paid by a randomly selected homeowner from this city is: less than $2100 more than $2600 between $3200 and $3700
please kindly make solution and answers visible. thanks Suppose that the amount of time that students...
please kindly make solution and answers visible. thanks
Suppose that the amount of time that students spend studying in the library in one sitting is normally distributed with mean 46 minutes and standard deviation 18 minutes. A researcher observed 8 students who entered the library to study. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-NI b. What is the distribution of u? -N c. What is the distribution of ? --N([...
There are 10,000 students at the University of Tennessee at Chattanooga. The average age of all...
There are 10,000 students at the University of Tennessee at Chattanooga. The average age of all the students is 25 years with a standard deviation of 5 years. A random sample of 49 students is selected. What is the probability that the sample mean will be between 24 and 27 years?
The average price of a new iPhone is $800. Assume the price follows a normal distribution...
The average price of a new iPhone is $800. Assume the price follows a normal distribution with a standard deviation of $50. 1. What is the probability that a randomly selected iPhone sells for less than $750? 2. What is the probability that a randomly selected iPhone sells for more than $880? 3. What is the probability that a randomly selected iPhone sells between $770 and $840?
Among all the applicants to the ABC university in one year, the sat scores followed a...
Among all the applicants to the ABC university in one year, the sat scores followed a normal distribution with a mean of 550 and a standard deviation of 90. Whats the probability that the average sat score among 20 randomly selected applicants is below 600?
QUESTION 4 The GPAs of all students enrolled at a large university have an approximately normal distribution with a mean of 3.05 and a standard deviation of 0.30. Find the probability that the mean GPA of a random sample of 49 students selected from this university is 2.75 or lower. Round your answer to four decimal places. Attach File
please kindly make solution and answers visible. thanks
Suppose that the amount of time that students spend studying in the library in one sitting is normally distributed with mean 46 minutes and standard deviation 18 minutes. A researcher observed 8 students who entered the library to study. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-NI b. What is the distribution of u? -N c. What is the distribution of ? --N([...
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