Calculus and Above

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The confidence interval for the difference between two
The confidence interval for the difference between two population means is to be undertaken. For this purpose a random sample of size 18 is taken from Population-1. The sample mean is found to be 5.7.… read more
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Can you please help with this question? I think my username
Can you please help with this question? I think my username might be different from last week but you helped me last week and my sister.? My mom sent a bonus on saturday for you but did not geta confi… read more
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According to a survey, high school girls average 100 text
According to a survey, high school girls average 100 text messages daily (The Boston Globe, April 21, 2010). Assume the population standard deviation is 20 text messages. Suppose a random sample of 50… read more
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My son a timed assignment of up to 15 math college algebra
My son a timed assignment of up to 15 math college algebra questions he needs assistance with... He has an hour and 15 minutes and can start the assignment around 3pm CST. Can you assist and provide a… read more
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The standard IQ test has a population standard deviation of
The standard IQ test has a population standard deviation of 13. We want to be 98% confident that we are within two IQ points of the true mean when constructing a confidence interval. Determine the min… read more
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I have to take an online exam for Statistics with 20
I have to take an online exam for Statistics with 20 questions and a 3 hour time limit. Can you assist me with this test for the next couple hours?… read more
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I have another statistics problem that is similar to others.
I have another statistics problem that is similar to others. It is dealing with confidence intervals.… read more
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Suppose that the time required to complete a 1040R tax form
Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 110 minutes and a standard deviation of 20 minutes. What proportion of 1040R tax forms will be comple… read more
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An independent-measures study produces sample means of M1=
An independent-measures study produces sample means of M1= 20 andM2= 17. If both samples haven= 18 scores and Cohen'sd= 0.50, what is the value for the pooled variance?… read more
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​One sample has M = 18 and a second sample has M = 14. If
​One sample has M = 18 and a second sample has M = 14. If the pooled variance for the two samples is 16, what is the value of Cohen's d?… read more
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The data given to the right includes data from 36 ​candies,
The data given to the right includes data from 36 ​candies, and 5 of them are red. The company that makes the candy claims that 33​% of its candies are red. Use the sample data to construct a 95​% con… read more
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Probability and Statistic question. 1). On a standardized
Probability and Statistic question.1). On a standardized test, Phyllis scored 84, exactly one standard deviation above the mean. If the standard deviation for the test is 6, What is the mean score for… read more
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A fair six-sided die has one face that is painted blue, two
A fair six-sided die has one face that is painted blue, two faces that are painted red and three faces that are painted green. You roll the die 20 times. What is the probability you observe blue exact… read more
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I would like to use the tutor I used on Saturday please. I
I would like to use the tutor I used on Saturday please … read more
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Probability question- A recent survey of 500 adults showed
a recent survey of 500 adults showed that 104 smoke. based on these results find the probability of randomly selected adult is a non smoker? … read more
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Sometimes we have data that is not normally distributed. If
Sometimes we have data that is not normally distributed. If we take samples from that data and compute the mean for each sample, we will find that the sample means are what?… read more
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Refer to the following frequency distribution for Questions
Refer to the following frequency distribution for Questions 1, 2, 3, and 4. Show all work. Just the answer, without supporting work, will receive no credit. The frequency distribution below shows the … read more
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Chirag
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1. Describe whether the following study would most likely
1. Describe whether the following study would most likely be “observational” or “experimental”, and why it would be so. • One group of cats were fed natural foods and another fed synthesized foods, to… read more
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