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In a certain forest, researchers have found an average of 38 beetles per 10m². What is...
ADA EE E DE 0 Normal No Spacing Heading 1 Heading 2 The weight of a...
ADA EE E DE 0 Normal No Spacing Heading 1 Heading 2 The weight of a certain variety of apples is normally distributed with mean u = 90g and standard deviation o = 10g. Find the probability that an apple of that variety weighs less than 75g. Round to nearest tenth of a percent.
la li Aa BbccDdEe AaBbCcDdEe X ADAU AaBbCcDc ABCcDdEe Heading 1 Heading 2 ON Normal No...
la li Aa BbccDdEe AaBbCcDdEe X ADAU AaBbCcDc ABCcDdEe Heading 1 Heading 2 ON Normal No Spacing Sty! Par In a certain forest, researchers have found an average of 23 spiders per 10m². What is the probability to find less than two spiders in a given m2? Round your answer to nearest percent. I English (Canada) O Focus
The number of ants per acre in the forest is normally distributed with mean 42,000 and...
The number of ants per acre in the forest is normally distributed with mean 42,000 and standard deviation 12.263. Let X = number of ants in a randomly selected acre of the forest. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-NO b. Find the probability that a randomly selected acre in the forest has fewer than 28,594 ants. c. Find the probability that a randomly selected acre has between 32,065 and...
The number of ants per acre in the forest is normally distributed with mean 42,000 and...
The number of ants per acre in the forest is normally distributed with mean 42,000 and standard deviation 12,109. Let X = number of ants in a randomly selected acre of the forest. 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 acre in the forest has fewer than 41,459 ants. c. Find the probability that a randomly selected acre...
Gold miners in Alaska have found, on average, 12 ounces of gold per 1000 tons of...
Gold miners in Alaska have found, on average, 12 ounces of gold per 1000 tons of dirt excavated with a standard deviation of 3 ounces. Assume the amount of gold found per 1000 tons of dirt is normally distributed. a) What is the probability the miners find less than 12 ounces of gold in the next 1000 tons of dirt excavated? b) What is the probability the miners find less than 6 ounces of gold in the next 1000 tons...
The marks obtained in statistics in a certain examination are found to be normally distributed. If...
The marks obtained in statistics in a certain examination are found to be normally distributed. If 15% of the candidates got greater than or equal 80 marks and 40% of candidates got less than 50 marks, find the mean and standard deviation of marks.
Due Thu 07/30/2020 11:59 pm The number of ants per acre in the forest is normally...
Due Thu 07/30/2020 11:59 pm The number of ants per acre in the forest is normally distributed with mean 43,000 and standard deviation 12.046. Let X = number of ants in a randomly selected acre of the forest. 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 acre in the forest has fewer than 29,536 ants. c. Find the probability that a randomly selected acre...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 148.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds is...
The amount of pollutants that are found in waterways near large cities is normally distributed with...
The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.7 ppm and standard deviation 1.6 ppm. 38 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) What is the probability that one randomly selected city's waterway will have less than 10.4 ppm pollutants? For the 38 cities, find...
A credit card company has found that its average balance per customer is normally distributed with...
A credit card company has found that its average balance per customer is normally distributed with a mean of $250 and a variance of 2500. a. Find the probability that the balance is over $300 b. Find the probability that the balance is less than $150 c. Find the value such that the probability of a customer’s balance being less than this amount is 0.05 d. Determine the values of a and b such that P(a...
ADA EE E DE 0 Normal No Spacing Heading 1 Heading 2 The weight of a certain variety of apples is normally distributed with mean u = 90g and standard deviation o = 10g. Find the probability that an apple of that variety weighs less than 75g. Round to nearest tenth of a percent.
la li Aa BbccDdEe AaBbCcDdEe X ADAU AaBbCcDc ABCcDdEe Heading 1 Heading 2 ON Normal No Spacing Sty! Par In a certain forest, researchers have found an average of 23 spiders per 10m². What is the probability to find less than two spiders in a given m2? Round your answer to nearest percent. I English (Canada) O Focus
The number of ants per acre in the forest is normally distributed with mean 42,000 and standard deviation 12.263. Let X = number of ants in a randomly selected acre of the forest. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-NO b. Find the probability that a randomly selected acre in the forest has fewer than 28,594 ants. c. Find the probability that a randomly selected acre has between 32,065 and...
The marks obtained in statistics in a certain examination are found to be normally distributed. If 15% of the candidates got greater than or equal 80 marks and 40% of candidates got less than 50 marks, find the mean and standard deviation of marks.
Due Thu 07/30/2020 11:59 pm The number of ants per acre in the forest is normally distributed with mean 43,000 and standard deviation 12.046. Let X = number of ants in a randomly selected acre of the forest. 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 acre in the forest has fewer than 29,536 ants. c. Find the probability that a randomly selected acre...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 148.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds is...
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