You want to assess the attitudes toward math by the students in your school district. You decide to break the students into subgroups according to the math course in which they are enrolled. The subgroups, or strata, are Integrated Math 1, Integrated Math II, Integrated Math II, Pre-calculus, AP Statistics, and AP Calculus. You then conduct a random survey with 20 students from each subgroup. The situation above is an example of which sampling type? O Stratified random sampling O Cluster sampling O Systematic sampling O Bivariate sampling

Q: L(1-a) ( In =) dz 4 1 L6(1-2) ( In =) dr

A:

Q: A-d please

A: Given the data of a survey of 15 teachers who were asked how many paintings they have in their…

Q: dx

A:

Q: 25+2=

A: First we calculate 2^5.2^5= 2x2x2x2x2=32

Q: D-F please

A: The normal distribution is the continuous probability distribution and has parameters mean and…

Q: Answer number 4

A:

Q: Please answer D

A: (a) Given that the percentage of stadiums have just built in the past 20 years is, P=15%=15/100=0.15…

Q: Answer 20

A:

Q: Answer unclear

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Q: 66 to the nearest 100

A: Find 66 to the nearest 100

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.