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deff fn [24]
3 years ago
11

Let event A= the place is a city let event B= the place in north America which outcomes are in A or B?

Mathematics
2 answers:
Free_Kalibri [48]3 years ago
7 0

Answer:

The place is a city,The place is in north America and The place is a city in north America

Step-by-step explanation:

We are given two events:

Let event A= the place is a city

let event B= the place is in north America

we have to find the outcomes of A or B

A or B means either A is true or B is true or both are true

so, outcomes of A or B are:

The place is a city,The place is in north America and The place is a city in north America

fredd [130]3 years ago
6 0

Answer:


Step-by-step explanation:

Given two events which are

A = the event that the place is a city

and

B = the event that the place is in north America.

We have to find outcomes which are either A or B

This can be denoted as event AUB which implies A or B or both

The event A or B is defined by the place is either a city or it is in north America or a place in north America.

Hence AUB = the place is a city or place is in North America





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Jadah bikes 45 miles in 3 hours. At this rate, how far does she go in 8 hours?
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120 miles

Step-by-step explanation:

45 divided by 3 equals to 15 and 15 times 8 equals 120.

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The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales
mihalych1998 [28]

Answer:

We conclude that the mean number of calls per salesperson per week is more than 37.

Step-by-step explanation:

We are given that the Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 37 sales calls per week on professors.

To investigate, a random sample of 41 sales representatives reveals that the mean number of calls made last week was 40. The standard deviation of the sample is 5.6 calls.

<em><u>Let </u></em>\mu<em><u> = true mean number of calls per salesperson per week.</u></em>

SO, <u>Null Hypothesis</u>, H_0 : \mu \leq 37   {means that the mean number of calls per salesperson per week is less than or equal to 37}

<u>Alternate Hypothesis,</u> H_A : \mu > 37   {means that the mean number of calls per salesperson per week is more than 37}

The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about the population standard deviation;

                        T.S.  = \frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean number of calls made last week = 40

             s = sample standard deviation = 5.6 calls

             n = sample of sale representatives = 41

So, <em><u>test statistics</u></em>  =   \frac{40-37}{\frac{5.6}{\sqrt{41} } }  ~ t_4_0

                               =  3.43

Hence, the value of test statistics is 3.43.

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Therefore, we conclude that the mean number of calls per salesperson per week is more than 37.

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