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a researcher takes a sample from a population and computes a statistic for the sample, which of the following statements is correct? Please explain

a. sample stat. overestimates the corresponding population parameter, then stat. is biased

b. sample stat. underestimates the corresponding population parameter, then stat. is biased

c. sample stat. is equal to the corresponding population parameter, then stat. is unbiased

d. none of the above

Consider a random walk on the 8 vertices of a cube. Find the hitting time, starting from a given vertex v, ofthe "opposite" vertex w, that is. the most distant vertex w which is not on any face of the cube such that v is in that face. 14. Refer to the figure below. Outside of cel Epinephrine Epinephrine Activated G protein Cell membrane "receptor subunit - Activated GTP adenylyl cyclase ATP CAMP Active glycogen Inactive protein kinase A synthase Active protein kinase A Inactive glycogen Inactive phosphorylase kinase synthase Active phosphorylase kinase Inactive glycogen phosphorylase Active glycogen phosphorylase Glycogon Glucose 1-phosphate Glucose Inside of cell Blood glucose Outside of cell The figure shows a signal transduction pathway in a cell. How does the number of molecules change as the signal is carried in this pathway? O The number of molecules maintains a constant of one-to-one signaling up to the point of CAMP production, then declines gradually. O The number of molecules gradually increases up to the point of CAMP production, then increases exponentially. O The transfer of signal from one step to the next is a linear process throughout the entire pathway with one molecule signaling the next. O The transfer of signal from one step to the next is a random process with no specific trend in quantity of molecules produced at any given step. O The number of molecules gradually increases up to the point of CAMP production, then remains constant.\fIntroduction to Stat. and Prob. Project Raw Set: 44 30 38 23 20 29 19 44 29 17 45 39 29 18 43 45 39 24 44 26 34 20 35 30 36 Requirements: 1) Find the mean, mode, and median. 2) Graph a) the frequency histogram b) pareto bar graph c) o'give plot d) closed polygon 3) Find the variance and standard deviation Please add one number or omit one number from the set so everyone's sets can be different