A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 68 specimens and counts the number of seeds in each. Use her sample results (mean - 39.3, standard deviation = 7.3) to find the 90% 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. %3D 90% C.I. = %3D

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A: We know that  Mean = sum of all observations/total number of observations 

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A: Ans#12- This non probability sampling is a variation of stratified sampling, wherein samples are col...

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A: The radical negative root of -19 is we need to took the square root of -19 so there will be - 4.3588

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A: Here we know that standardized regression coefficient describes the correlation coefficients and its...

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A: According to Bartleby guildlines we have to solve first three subparts and rest can be reposted... G...

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A: If the variable represents the measurable quantity then it can be termed as quantitative variable.

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A: Question: Pearson’s product-moment correlation coefficient is represented by which letter? Answer: I...

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A: Given27,27,9,26,9,26,19,18,17,25,24sample size(n)=11

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A: Here we know that degree of freedom of correlation coefficient is (n-2).  

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A: given data; Purchase likelihood 18 - 34 35 - 44  45 - 54 55+ Total More likely 232 353 366 400 ...

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A: GivenP(Z&lt;z0)=16.85%

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Q: IID Suppose X1,..., X, N(u,o2). Construct a 95% confidence interval for o? when µu is known.

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A: Here when we calculate correlation coefficient then we need mean, standard deviation.

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Q: Q. 4. Fit a straight line from the following data Years : 1989 1990 1991 1992 Sales (1000) : 12 15 1...

A: Given a data on years and sales, we have to fit a straight line from the given data. 

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A: Option D is the answer.

Q: Q9. The diagram is the distribution of the Standard Normal variate, Z. wwww w 0.5 0.4 0.3 .025 .025 ...

A: We have given that.   X~N( μ , ?^2 )   μ =0 , ? =1   Z-score =( x - μ )/?

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A: We can calculate critical value of correlation coefficient by t-distribution table.