For each of the samples below, calculate the mean, variance, standard deviation, and standard error of the mean. Mean serum cholesterol levels (mg/100m²) of male female turtles. Females 220.1 218.6 229.6 228.8 222.0 224.1 226.5 Males 223,4 221.5 230.2 224.3 223.8 230.8
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- Ten male Harvard students were weighed in 1916. Their weights are given here in kilograms. Calculate the mean, variance, and standard deviation for these weights. 51, 69, 69, 57, 61, 57, 75, 105, 69, 63The heights of mothers and daughters are given in the following table: Height of mother (in) Height of daughter (in) 64 66 65 66 66 68 64 65 63 65 63 62 59 62 62 64 61 63 60 62 a. Calculate the correlation coefficient for the heights of the mothers and daughters. b. Using regression, predict the expected height of a daughter whose mother is 67 inches tall.Calculate the Variance of the following data set: 10, 15, 13, 12, 14
- Using the data below, calculate the correlation: covariance -0.9 standard deviation(x) = 10.5 standard deviation(y) = 10.4 (calculate to 2 significant figures)I have a large number for my standard deviation. What does this tell me about the variability in my data? Select one: the variability is just right the variability is low the variability is high more data is neededI'm needing help with part 1 through 3, please The data of Sugar Water and Plain Water: mean # of drops variance degrees of freedom t stat t crit (from the table) plain water 25.3 17.221 38 -4.01 2.0261 sugar water 21.3 21.256 1. Make a statement about t stat in relation to t crit. And what is the p-value? 2. Is there a statistically significant difference between the mean values (mean # of drops) of the sugar and plain water? Give your "yes" or "no" answer and the supporting evidence. 3. Hypothesis: The surface tension of plain water is higher than the surface tension of sugar water. Do these results support or refute the hypothesis about the effect of dissolving salt in water on surface tension?
- Compare the 95% confidence interval for the difference between two true means with the 95% confidence interval for an individual true kean. Describe one way in which these two equations are similar and state four ways in which these equations differ.If you wanted to know if your average absorbances for pH 7 and pH 11 were different, what preliminary calculation would you preform? Select one: a. Standard deviation b. Variance c. Standard error of mean d. RangeGive typing answer with explanation and conclusion How to code time-varying covariate in scm for population PK modeling ?
- Describe in your own words what variance measures. Then explain why the variance of both samples must be used in the calculation of a t-test (In other words, explain why we have to factor in the variance when comparing the means).The relationship between weight (in kilograms) and gender was estimated as below in a linear format. (Male was coded as 0 and Female was coded as 1.) Weight = -10.23 * Female + 66.73 (The p-value for the coefficient of Female is 0.03.) Base on the above equation, which of the following statements are true? (Select all that apply. There can be more than one answer.) Answer options: In the sample used to estimate the equation, the average weight of females is 66.23 kilograms In the sample used to estimate the equation, the average weight of females is 56.5 kilograms In the sample used to estimate the equation, the average weight of males is 66.73 kilograms Females are expected to weigh 10.23 kilograms less than malesWhich of the following statistics is used to compare two variables?a. Meanb. Correlation coefficientc. Varianced. Standard deviation