The following height data (in inches) was collected from a sample of 4 individuals: 80, 71, 66, 100.  What is the sample variance?   Group of answer choices 4(25797)−(317)24(3)in24(25797)−(317)24(3)in2 4(25797)−(317)24(3)−−−−−−−−−−√in4(25797)−(317)24(3)in 4(317)−(25797)24(3)in24(317)−(25797)24(3)in2 4(317)−(25797)24(3)−−−−−−−−−−√in4(317)−(25797)24(3)in 4(317)2−257974(3)in24(317)2−257974(3)in2 4(317)2−257974(3)−−−−−−−−−√in4(317)2−257974(3)in None of the above

What is the t statistic for the top 3% for a sample size of 19.

Which of the following procedures would you use to investigate this question: Is a California resident in 2020 more or less likely to have been born in California than a California resident in 1950? O Analysis of variance O Chi-square test för goodness-of-ft One-sample z-test for a proportion O Two-sample t-test for comparing means O Two-samplez-test for comparing proportions

A study was conducted to see of airbags save lives. The table below lists the results from a simple random sample of front-seat occupants involved in car crashes.    Airbag Available No Airbag Available Occupant Fatalities 41 52 Total number of occupants 11,541 9,853   What is the sample proportion of fatalities where there were no airbags available, p2? What is the difference in the two proportions, D? What is the standard error of the difference, SED?