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Martin and Clara decide to keep track of the number of different colors in two brands of tennis shoes, brand A and brand B. Thei
r results are represented by the dot plots. The mean absolute deviation for brand A is . The mean absolute deviation for brand B is . The mean absolute deviations for the two brands similar.
1 answer:
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Answer: z =2.39
Step-by-step explanation:
Given :
A random sample of 136 households found that 43 consisted of one person.
i.e. Sample size : n= 136
Sample proportion :
Test statistic for proportion :-
Hence, the value of the test statistic: z =2.39
Answer:
Event A：15/36
Event B：18/36
Step-by-step explanation:
We can use a table for this question，the two succession are independent so we can see it as two dice rolling at one time.
Then we just need to find out the sum which is required.
Event A: 15÷36 because there are 15 sum greater than 7 and 36 total outcomes.
Event B: 18÷36
