A hospital report indicates 25% of its patients had an MRI in January. If 1,060 patients were hospitalized in January, how many had an MRI?

According to an article in Newsweek, the natural ratio of girls to boys is  100:105 . In China, the birth ratio is  100:116  ( 46.3%  girls). Suppose you don’t believe the reported figures of the percent of girls born in China. You conduct a study. In this study, you count the number of girls and boys born in  100  randomly chosen recent births. There are  42  girls and  58  boys born of the  100 . Based on your study, do you believe that the percent of girls born in China is  46.3 ? A.)What is the test statistic?    Round your answer to three decimal places. (z / t ) =  B.) What is the  p -value? Round your answers to four decimal places. p -value  = C.) Let  α=0.05 .      Decision: (Reject the null hypothesis / do not reject the null hypothesis)       Reason for decision: ( a < p-value / a > p-value)       Conclusion: There is (insufficient/ insufficient)  evidence to conclude that the percentage of girls born in China is different from  46.3% .

A software company is interested in improving customer satisfaction rate from the 74% currently claimed. The company sponsored a survey of 113 customers and found that 90 customers were satisfied.

The total sales made by a salesperson was $25,000 after 3 months and $68,000 after 23 months. Predict the total sales after 28 months. O A. $78,750 B. $78,850 O C. $78,720 O D. $78,792

Suppose that 5% of teachers at a university attended a conference. If 4000 teachers are enrolled at the university, about how many teachers attended the conference? 2000 200 20 3800

A certain county had a population of 34,485 people. The county hospital is interested in estimating the number of people in the county with blood type-O. To do this, they test blood samples from 228 patients. Out of this group, 10 have blood type-O. Use this sample to estimate the number of people in the county with blood type-O.

Please help answering this one:

A report states that 45% of American adults were obese. In this report, adults were considered to be 20 years of age or older.     If about 71% of Americans are adults (20 and over), use the U.S. population estimate of 301 million people to calculate the number of American adults age 20 and older.

Suppose that 9% of all athletes in a sport use a banned drug. A test is available that detects 94% of athletes who use the drug. But the test also gives a positive result for 8% of those who do not use the drug. What percent of athletes who test positive for the drug are actually using the drug? Answer: 77.28 %

The Humane Society is interested in finding out how many households in America have at least one cat. How many households must be surveyed to be 95% confident that the estimate will be within 4% of the true population percentage?