In the probability distribution table below, the random vari…

In the probability distribution table below, the random variable x is the number of emails received in a day by a math professor.  Answer the following questions below rounding all answers to two decimals. x P(x) 0 0.05 1 0.10 2 0.20 3 0.25 4 0.30 5 0.10 a.  Find the parameters for mean [mu] and standard deviation [sigma] b.  Use the parameters and the range rule of thumb to find the cutoffs for significantly low [siglow] and significantly high [sighigh] c.  What is the probability the professor will get exactly 1 email?  [equal1] d.  What is the probability the professor gets 3 or more emails? [3ormore]

The number of hours a battery lasts before failing is strong…

The number of hours a battery lasts before failing is strongly skewed to the right.  Answer the following questions regarding the Central Limit Theorem.   a.  True or False, we can use a normal distribution to find probabilities about a single battery. [one] b.  True or False, we can use a normal distribution to find probabilities about the mean of a pack of 12 batteries. [twelve] c.  True or False, we can use a normal distribution to find probabilities about the mean of a pack of 24 batteries. [24] d.  True or False, we can use a normal distribution to find probabilities about the mean of a pack of 48 batteries. [48]

Try the links below to access StatCrunch.  If for some reaso…

Try the links below to access StatCrunch.  If for some reason it does not let you access StatCrunch, exit the test immediately and contact me. The first is a direct link to a StatCrunch Spreadsheet.  If the buttons are greyed out sign in at the top right of the page: https://www.statcrunch.com/app/index.phpLinks to an external site. Next is the statcrunch homepage and login page.  Try these links if you have any problems logging in with the previous link.  After you login try the link above again. https://www.statcrunch.com/Links to an external site. https://login.pearson.com/v1/piapi/piui/signin?siteid=10529&client_id=eIGhxJPAx04baGpQ2XTxrLZ5tq2LG6Ss&okurl=https:%2F%2Fwww.statcrunch.com%2FLinks to an external site.

It is generally believed that nearsightedness affects 12% of…

It is generally believed that nearsightedness affects 12% of children.  A school district gives vision tests to 133 incoming kindergarten students.  Answer the following questions rounding your answers to 4 decimals. a.  Which probability distribution can we use to describe this scenario (Binomial or Poisson)? [dist] b.  Find the parameters for mean [mean] and standard deviation [sigma] c.  What is the probability exactly 14 students are near sighted? [equal14] d.  What is the probability at least 25 students are near sighted? [25ormore] e.  Would at least 25 students be considered significantly low, significantly high, or neither [sig]

Company A has 3 subsidiaries (Company codes 0001, 0002, and…

Company A has 3 subsidiaries (Company codes 0001, 0002, and 003) and uses a centralized payment program.  Company code 0001 pays its own items and the items of company codes 0002 and 0003. However, a separate payment is created for each company code. The bank account of company code 0001 is used to pay for all transactions.        Company code  Paying company code  Sending company code 0001 (1)  (2) 0002 (3)  (4) 0003 (5) (6) What should be the setting for cells (1) through (6)?