Consider the time to recharge the flash in cell-phone cameras. Assume that the probability that a camera passes the test is 0.85 and the cameras perform independently. Determine the following. Probability that the third camera that passed occurs on the third camera tested. Expected number of cameras tested to obtain 3 passed cameras. Let X be a negative binomial random variable. Camera 1 Camera 2 Camera 3 Probability Pass Pass Pass 0.512 3 Fail Pass Pass 0.128 2 Pass Fail Pass 0.128 2 Fail Fail Pass 0.032 1 Pass Pass Fail 0.128 Fail Pass Fail 0.032 1 Pass Fail Fail 0.032 1 Fail Fail Fail 0.008

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The salary schedule for an engineering assistant is $2200 for the first month and a $150-per-month salary increase for the next 9 months. Find the monthly salary during the tenth month. Find the total salary for the 10-month period.

Jeremy is twice as old Randy now. 6 years ago, the sum of their age was 18. How old is Jeremy now?

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High School Band - In most US high schools, students can play an instrument in three types of bands. A random sample of high school band students was taken and the results are summarized in the table below. Instrument type Band Woodwind Brass Percussion type Concert 31 25 8. Jazz 10 16 10 Marching 65 65 27 To assess whether there is a relationship between band type and instrument type, we want to conduct an appropriate hypothesis test. Choose the null and alternative hypothesis? 1. The categorical variables band type and instrument type are independent. Alternative hypothesis 2. The categorical variables band type and instrument type are not independent. Null hypothesis