A smart phone manufacturer is interested in constructing a 99% confidence interval for the proportion of smart phones that break before the warranty expires. 90 of the 1587 randomly selected smart phones broke before the warranty expired. Round answers to 4 decimal places where possible. a. With 99% confidence the proportion of all smart phones that break before the warranty expires is between and b. If many groups of 1587 randomly selected smart phones are selected, then a different confidence interval would be produced for each group. About percent of these confidence intervals will contain the true population proportion of all smart phones that break before the warranty expires and about percent will not contain the true population proportion.

Q: Find Jul, Ivl, 12ul, , lu + vl, lu- vl, and Jul - Ivl. i+ 4j, =i-2j Ju + v = %3D Ju-vl = %3D lul -…

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Q: In driving from town A to town D, you pass first through town B and then through town C. It is 10…

A: Explanation of the answer is as follows

Q: Given that P l2 and PAP = D, compute A". %3D %3D

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Q: 1. Find x and y yo 35

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Q: 18 2y Find ST.

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Q: 20 R] 12 16 T.

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Q: (f) Determine the sample standard deviation and interquartile range The standard deviation is and…

A: 36,68,78,84,91,47,69,79,85,92,53,72,79,85,92,59,76,79,86,92,60,77,79,86,94,65,77,79,87,96,65,78,80,8…

Q: Park St. 35° Elm St. 116th St. Main St.

A: This question is based on Triangles theorem.

Q: Mrs. Martino is shopping for a backyard barbecue. She buys 6 lbs. of hamburger pattles at $2.89 a…

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Q: In r dx 7.)

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Q: 12. Give the x-coordinates of all points where f is not differentiable. Iff is differentiable…

A: Given: The graph of the function, f as shown below:

Q: Find the oter. wrse, fed, ans seisity sfe al;au. 131

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Q: - 1 a. 6. b. a (a-3)2 С. -3 a d. -3 a e. a 2 a 5,

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Q: Verify.

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Q: 口 3. Flnd the LCM of 22a b c and 55abc. O 110a b O 77a'bc O 110abc O 1labc

A: LCM of two numbers is the smallest number that is divisible by both numbers.

Permutations and Combinations

If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.

Counting Theory

The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.