![subject](/tpl/images/cats/mat.png)
Mathematics, 28.08.2019 13:30 hannaho64
Aday care program has an average daily expense of $75.00. the standard deviation is $15.00. the owner takes a sample of 64 bills. what is the probability the mean of his sample will be between $70.00 and $80.00?
step 1. calculate a z-score for $70.00:
step 2. give the probability for step 1:
step 3. calculate the z-score for $80.00:
step 4. give the probability for step 3:
step 5. add the probabilities from steps 1& 3:
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:00
If x+y+z=0 what is the value of [tex] {x}^{3} + {y}^{3} + {z}^{3} [/tex]
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
In an equilateral triangle, each angle is represented by 5y+3. what is the value of y? a. 9.7 b. 10.8 c. 11.4 d. 7.2
Answers: 1
![question](/tpl/images/cats/mat.png)
You know the right answer?
Aday care program has an average daily expense of $75.00. the standard deviation is $15.00. the owne...
Questions
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 24.08.2019 10:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 24.08.2019 10:10
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 24.08.2019 10:10
![question](/tpl/images/cats/mat.png)
Mathematics, 24.08.2019 10:10
![question](/tpl/images/cats/es.png)
Spanish, 24.08.2019 10:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 24.08.2019 10:10
![question](/tpl/images/cats/ekonomika.png)
Business, 24.08.2019 10:10
![question](/tpl/images/cats/en.png)
English, 24.08.2019 10:10
![question](/tpl/images/cats/biologiya.png)
Biology, 24.08.2019 10:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 24.08.2019 10:20
![question](/tpl/images/cats/himiya.png)
Chemistry, 24.08.2019 10:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 24.08.2019 10:20