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mojhsa [17]
3 years ago
15

I worked for 12 hours each day for 6 days then the next day I worked 9 hours how many did I work in all

Mathematics
2 answers:
nikitadnepr [17]3 years ago
4 0

Answer:

81

Step-by-step explanation:

12(6) + 9

72 + 9

81......

Snowcat [4.5K]3 years ago
3 0

Answer:

81.

Step-by-step explanation:

(12 x 6) + 9 = 81

12 x 6 = 72

72 + 9 - 81

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Answer:

The upper limit of the 95% confidence interval is:

C.I_u = 200 + (58.8/\sqrt{n})

Step-by-step explanation:

The formula is given as:

C.I = μ ± Z*σ/\sqrt{n}

The upper limit => C.I_u = μ + Z*σ/\sqrt{n}

The lower limit => C.I_l = μ - Z*σ/\sqrt{n}

The sample size (n) is not stated in the question. Hence, we calculate the upper limit with respect to n.

The upper limit => C.I_u = 200 + 1.96*(30/\sqrt{n})

                                    = 200 + (1.96*30)/\sqrt{n}

                                    = 200 + 58.8/\sqrt{n}

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