botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 67 specimens and counts the number of seeds in each. Use her sample results (mean = 17.7, standard deviation = 13.5) to find the 99% confidence interval for the number of seeds for the species. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places.  99% C.I. =

Q: A state administered standardized reading is given to eighth grade students. The scores for all…

A: Mean(μ)=517 Standard deviation(σ)=63

Q: A class of 30 62.171 students took a quiz worth 50 points. The standard deviation of the scores was…

A: Standard deviation of sample is given by

Q: Use z scores to compare the given values. In a recent awards ceremony, the age of the winner for…

A:

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given that:

Q: Choose a quantitative variable.  Measure it on two different samples of 10, drawn from two different…

A:

Q: In a Statistics examination, the mean score is 82 and the standard deviation is 3.5. If the teacher…

A:

Q: Kelsey Matthau is an advisor for a high school. The high school offers a class for students…

A: The Given hypothesis test for the difference between two means of independent samples is…

Q: How many adults must be randomly selected to estimate the mean FICO (credit rating) score of working…

A: By using the provided information, We have 95% confidence level Margin of error = 4 Population…

Q: Beth randomly chose 30 school days and timed her drive to school on those days. Ana randomly chose…

A: Given that  We have to test hypothesis for the claim that Beth’s drive time is greater than…

Q: The average number of hours worked per week for college students is 27, and the standard deviation…

A:

Q: C. Find the probability that a randomly selected district had fewer than 1994 votes for President…

A:

Q: The population average GPA for fall students is 3.00. You think the average GPA for Psychology…

A: The test statistic for single mean is, t=x¯-μ0snwherex¯=sample means=sample standard…

Q: Use z scores to compare the given values.   In a recent awards​ ceremony, the age of the winner for…

A: Given : x¯actor = 45.5 sactor = 6.7 xactor = 34 x¯actress = 32.7 sactress = 10.2 xactress = 45 Z = x…

Q: What raw score does he need to get the certificate

A: Given that Mean = 83 And SD = 3.2

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 234…

A:

Q: Justin got a score of 85 on an GE MMW examination for which the mean is 75. Justin realized that the…

A: Given:Here use the formula;here,  represents the value of Standard Daviation.

Q: se z scores to compare the given values.   In a recent awards​ ceremony, the age of the winner for…

A: Given: the age of the winner for best actor =29 the age of the winner for best actress=45 For best…

Q: You need to estimate the mean number of travel days per year for sales people. The mean of a small…

A: Given that : Standard deviation σ = 12 days Margin of error (E)= 3 We have to find 80% confidence…

Q: A population has mean 27 and standard deviation 12 . What is the data value that has a z-score of -2…

A: Given data, Mean=27 sd=12 z=-2 x=?

Q: Your instructor wishes to estimate the mean amount of time students spend studying math each…

A: Given that  Margin of error =E =2 Population standard deviation =12.7 95% confidence.

Q: recent awards​ ceremony, the age of the winner for best actor was 33 and the age of the winner for…

A: Given that  For all best​ actors, the mean age is 44.6 years and the standard deviation is 8.3…

Q: A sandwich shop claims to sell sub sandwiches that are 12 inches lona. An employee is a little…

A: We have given information, μ=12 inches n=45 x¯=12 inches s= 18 inches

Q: The standard deviation on a final examination was 9, while the mean grade was 72. The best 14% of…

A: GivenMean(μ)=72standard deviation(σ)=9

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 233 cm.…

A:

Q: Assume that adults have iq scores that are normally distributed with a mean of 98.2 and a standard…

A:

Q: Use z scores to compare the given values. In a recent awards ceremony, the age of the winner for…

A:

Q: Heights of 130 singers in the NY Choral Society in 1979 were self-reported to the nearest inch. The…

A: The objective is to choose applicable option to use assumption of equal variances about SD is close…

Q: Calculate z scores from two samples "he tallest living man at one time had a height of 252 cm. The…

A: Given data,Mean is μ=170.25sd is     σ=8.47

Q: You would like to estimate the variance and standard deviation for credit scores based on FICO.…

A: Construct the 95% confidence interval estimate for the variance of credit scores Obtain the critical…

Q: The use of chemicals is considered to increase the resistance to scratches during a painting…

A:

Q: Use z scores to compare the given values

A:

Q: Use z scores to compare the given values. ages are dotards ceremony, the age of the winner for best…

A:

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

A:

Q: Calculate the standard error for a sample mean when the population standard deviation is 221.6 and…

A: Given data N = 36 SD = 221.6

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: Given Data : Sample Size, n = 14.0 Sample Mean, x̄ = 82.1 standard…

Q: Compute a confidence interval (95% interval, 2-tailed) for a mean. Data: sample mean = 38.5; sample…

A: Given, x¯=38.5s=8n=22α=0.05

Q: manager of a major retail store has taken a random sample of 25 customers. The average sale was…

A: From the given information we conduct t test for one mean.

Q: 6. The scores of individual students on a national test have a normal distribution with mean of 18.0…

A: Population mean μ =18.6Population standard deviation =5.9Sample size n =76