(Answered) Question two types of phone operating system are being

Statistics

Question: Two types of phone operating system are being tested to determine if there is a difference in the proportions of system failures (crashes). Fifteen out of a random sample of 150 phones with OS₁ had system failures within the first eight hours of operation. Nine out of another random sample of 150 phones with OS₂ had system failures within the first eight hours of operation. OS₂ is believed to be more stable (have fewer crashes) than OS₁.

1. Is this a test of means or proportions?

2. What is the random variable?

3. State the null and alternative hypotheses.

4. What is the p-value?

5. What can you conclude about the two operating systems?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92476353
Price:- $20

Verified Expert

Priced at $40 Now at $20, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Monthly water bills for a city have a mean of 10843 and a

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. Find the probability that a randomly selected bill will have an amount greater than $165, which the city believes might indicate t ...

If two samples a and b had the same mean and sample size

If two samples A and B had the same mean and sample size, but sample A had a larger standard deviation, which sample would have the wider 95% confidence interval?

Lisa anderson expects to need 80000 for a down payment on a

Lisa Anderson expects to need $80,000 for a down payment on a house in six years. How much would she have to invest today in an account paying 7.25 percent in order to have $80,000 in six years? (Round answer to 2 decima ...

A doctor wants to predict the birth weight of a newborn

A doctor wants to predict the birth weight of a newborn baby (measured in grams) based on the gestational age (measured in weeks) at the time of birth. The doctor uses 11 data points, with births ranging from 29 weeks to ...

In a recent year 8415394 male students and 4879215 female

In a recent year, 8,415,394 male students and 4,879,215 female students were enrolled as undergraduates. Receiving aid were 62.9% of the male students and 68.3% of female students. Of those receiving aid, 41.9% of the ma ...

Suppose a researcher is interested in the number of good

Suppose a researcher is interested in the number of good versus bad dreams that students have during final exam week. The researcher states that p = 0.52 that a student will have a bad dream during final exam week. (a) ...

The contents of a particular bottle of shampoo marked as

The contents of a particular bottle of shampoo marked as 150 ml are found to be 153 ml at an average, with a standard deviation of 2.5 ml. What proportion of shampoo bottles contain less than the marked quantity? Assume ...

Two payments of 9000 and 2600 are due in 1 year and 2 years

Two payments of $9,000 and $2,600 are due in 1 year and 2 years, respectively. Calculate the two equal payments that would replace these payments, made in 6 months and in 5 years if money is worth 10.00% compounded quart ...

What is measured by the numerator of the z-score test

What is measured by the numerator of the z-score test statistic?

Seedlings come in packages of 10 and consist of the

Seedlings come in packages of 10 and consist of the following: 2 Douglas-fir, 3 spruce, and 5 pines. In any given package, how many ways can the 10 seedlings be arranged if seedlings that are the same species cannot be d ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert