![subject](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 01:00 faithiemusic8821
Using the normal approximation to find the indicated probability. The sample size is n, the population proportion of successes is p, and X is the number of successes in the sample. n = 84, p = 0.4: P(X > 26)
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:40
The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:00
Tom drove 206 miles in 3.9 hours. estimate his average speed.
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:00
(20 points) a bank has been receiving complaints from real estate agents that their customers have been waiting too long for mortgage confirmations. the bank prides itself on its mortgage application process and decides to investigate the claims. the bank manager takes a random sample of 20 customers whose mortgage applications have been processed in the last 6 months and finds the following wait times (in days): 5, 7, 22, 4, 12, 9, 9, 14, 3, 6, 5, 15, 10, 17, 12, 10, 9, 4, 10, 13 assume that the random variable x measures the number of days a customer waits for mortgage processing at this bank, and assume that x is normally distributed. 2a. find the sample mean of this data (x ě…). 2b. find the sample variance of x. find the variance of x ě…. for (c), (d), and (e), use the appropriate t-distribution 2c. find the 90% confidence interval for the population mean (îľ). 2d. test the hypothesis that îľ is equal to 7 at the 95% confidence level. (should you do a one-tailed or two-tailed test here? ) 2e. what is the approximate p-value of this hypothesis?
Answers: 2
You know the right answer?
Using the normal approximation to find the indicated probability. The sample size is n, the populati...
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2020 00:57
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2020 00:57
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 04.06.2020 00:57
![question](/tpl/images/cats/health.png)
Health, 04.06.2020 00:57
![question](/tpl/images/cats/es.png)
Spanish, 04.06.2020 00:57
![question](/tpl/images/cats/himiya.png)
Chemistry, 04.06.2020 00:57
![question](/tpl/images/cats/mir.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2020 00:57
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/fr.png)
French, 04.06.2020 00:57
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 04.06.2020 00:57
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2020 00:57
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 04.06.2020 00:57
![question](/tpl/images/cats/en.png)