Calculus and Above

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Suppose the lengths of the pregnancies of a certain animal
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 266 days and standard deviation sigma equals 26 days. Complete parts​ (a) through​… read more
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IQ scores are Normally distributed (i.e., “-shaped”) with an
Second opinion] IQ scores are Normally distributed (i.e., “bell-shaped”) with an average score of 100 points and a standard deviation of 20 points.What percentage of IQ scores are between 60 and 120 p… read more
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IQ scores are Normally distributed (i.e., “-shaped”) with an
IQ scores are Normally distributed (i.e., “bell-shaped”) with an average score of 100 points and a standard deviation of 20 points.What percentage of IQ scores are between 60 and 120 points? … read more
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A mechanic sells a brand of automobile tires that has a life
A mechanic sells a brand of automobile tires that has a life expectancy that is normally distributed with a mean life of 24,000 miles and a standard deviation of 2800 miles he wants to give a guarante… read more
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A mechanic sells a brand of automobile tires that has a life
A mechanic sells a brand of automobile tires that has a life expectancy that is normally distributed with a mean life of 24,000 miles and a standard deviation of 2800 miles he wants to give a guarante… read more
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Math The lengths of pregnancies are normally distributed
Math The lengths of pregnancies are normally distributed with a mean of 268 days and standard deviation of 15 days find the probability of a pregnancy lasting 307 days or longer? Round to four decimal… read more
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Suppose the lengths of the pregnancies of a certain animal
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 191 days and standard deviation sigma equals 16 days. Complete parts​ (a) through​… read more
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Master's Degree
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The amount of corn chips dispensed into a 16​-ounce bag by
The amount of corn chips dispensed into a 16​-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 16.5 ounces and a standard deviation of 0.2 oun… read more
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The lengths of pregnancies are normally distributed with a
The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 309 days or longer. b. If the length of … read more
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Suppose the lengths of the pregnancies of a certain normally
suppose the lengths of the pregnancies of a certain normally distributed with mean equals 273 and standard deviation sigma equals 27. what is the probability that a randomly selected pregnancy lasts l… read more
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Bachelor's Degree
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The lengths of pregnancy terms for a particular species of
The lengths of pregnancy terms for a particular species of mammal are nearly normally distributed about a mean pregnancy length with a standard deviation of 15 days. About what percentage of births wo… read more
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Use the normal distribution of SAT critical reading scores
Use the normal distribution of SAT critical reading scores for which the mean is 515 and the standard deviation is 117. Assume the variable x is normally distributed. left parenthesis a right parenthe… read more
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The weight of a bag of chips is distributed with a mean of
The weight of a bag of chips is distributed with a mean of 2/ ounces and standard deviation of 1/2 ounce. What is the probability that a bag of corn chips weighs more than21 ounces… read more
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susan ; Exhibit 6-8 The life expectancy of a particular
susan ; Exhibit 6-8 The life expectancy of a particular brand of tire is normally distributed with a mean of 40,000 and a standard deviation of 5,000 miles. Refer to Exhibit 6-8. What is the probabili… read more
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Help! I've working on a statistics word problem (below).
Help! I've working on a statistics word problem (below). I've got my z-table in front of me but I can't figure out what steps to take to get the correct answer. Is there anyone who can help me with th… read more
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Two normal distributions are compared. One has a mean of 10
Two normal distributions are compared. One has a mean of 10 and a standard deviaion of 10. The second normal distribution has a mean of 10 and a standard deviation of 2. Which of the following is true… read more
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22e. Suppose that you were assigned to write an article for
22e. Suppose that you were assigned to write an article for the student newspaper and you were given a quota ( by the editor) of interviewing at least three extroverted professors. How many professors… read more
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Bachelor's Degree
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The distribution of the weights of loaves of bread from a certain
The distribution of the weights of loaves of bread from a certain bakery follows approximately a normal distribution. Based on a very large sample, it was found that 10 percent of the loaves weighed l… read more
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