Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires caused by humans in the west? 445 of the 559 randomly selected wildfires looked at in the south were caused by humans while 459 of the 544 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the  = 0.05 level of significance?   For this study, we should use      The null and alternative hypotheses would be:        `H0:`                      `Ha:`                  3. The test statisti

Q: It was reported that 46% of people believe that there is life on other planets in the universe. A…

A: One Proportion Z - test is applicable in this case

Q: the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A:

Q: A random sample of 54 students from Cabrillo College are selected from a normal population with mu…

A: We have to find correct statement for given. Data

Q: Recently a large academic medical center determined that 10 of 22 employees in a particular position…

A: Given, p=0.48  x=10 n=22 p^=xn=1022=0.454545

Q: A researcher claims that the percentage of people who will choose to receive a COVID-19 vaccine is…

A: Here we conduct Z test for proportion.

Q: The null and alternative hypotheses are:

A: Here , we want to find the null and alternative hypothesis. Here , we use paired t-test because the…

Q: A Company claims that 9 out of 10 doctors(i.e.90%) recomend its brand of cough syrup to their…

A:

Q: Recently, a large academic medical center determined that 10 of 25 employees in a particular…

A:

Q: 17% of all college students volunteer their time. Is the percentage of college students who are…

A: 17% of all college students volunteer their time. Is the percentage of college students who are…

Q: The mean ± 1 SD of calcium intake (in mg) among 25 females, 12-14 years of age, below the poverty…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: In a random sample of males, it was found that 23 write with their left hands and 214 do not. In a…

A:

Q: It has been reported that 65% of the U.S. adult population play video games in their leisure time. A…

A: Given that  Sample size n =195 Favorable cases x =125 Sample proportion p^=x/n  =125/195 =0.6410

Q: Although many new moms will nurse their new babies in the beginning, the Pediatrics Association…

A:

Q: A carnival game is designed so that approximately 10% of players will win a large prize. If there is…

A: Solution: Given n= 100 Sample size  p= 0.10 Population proportion.  The condition or assumption for…

Q: In a random sample of males, it was found that 223 write with their right hands and 21 do not. In a…

A: Given: The data on  right-handedness among males and among females. Let X be the number of males who…

Q: the proportion of wildfires caused by humans in the south different from the proportion of wildfires…

A: We have given that  Sample sizes n1= 519 ,n2= 500 Favorable cases x1= 350   , x2= 383

Q: A computer manufacturer believes that the proportion of hardware malfunctions is different in humid…

A: Given Information: Claim: proportion of hardware malfunctions is different in humid climates than in…

Q: random sample of 144 recent donations at a certain blood bank reveals that 89 were type A blood.…

A: We have given that  Sample size n =144 Favorable cases x=89 Sample proportion p^=x/n  =89/144…

Q: It was claimed recently that more than  60%  of high school students in the United States use…

A: Given Data Hypothesized proportion p = 0.60 Formulation of Hypotheses: The null hypothesis is: H0­…

Q: Only 20% of registered voters voted in the last election. Will voter participation decline for the…

A: The provided information are:

Q: In a survey by Bea et al., it was found that 218 of 1,062 urban residents had a history of allergic…

A: Given: n1=1062 n2=1000 x1=218 x2=728

Q: In a random sample of males, it was found that 28 write with their left hands and 208 do not. In a…

A: The random variable left-handedness follows normal distribution. There are two independent samples…

Q: s the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A: Solution: Given information: n1= 562 Sample size of wildfires in south n2= 548  Sample size of…

Q: In a preliminary study, the U.S. Veterans Affairs Department found that 20.9% of the 81 soldiers who…

A: Given Information : In a preliminary study, the U.S. Veterans Affairs Department found that 20.9% of…

Q: Only 16% of registered voters voted in the last election. Will voter participation increase for the…

A: It is given in the question that only 16% of registered voters voted in the last election.  Recently…

Q: A doctor wants to compare the average price between two different brands of sanitizer during the…

A: Denote μ1, μ2 as the true average selling price for Brand A and B, respectively. The null and…

Q: In 1995, it was determined that 78% of US citizens supported a ban on household aerosols.  Thinking…

A: Given that p=78%=0.78

Q: The recommended dietary allowance (RDA) of vitamin C for women is 75 milligrams (mg) per day. A…

A: From the given information we want to find null and alternative hypothesis.

Q: It was claimed recently that more than 55% of high school students in the United States use…

A:

Q: A random sample of 164 recent donations at a certain blood bank reveals that 89 were type A blood.…

A: Givenx=89n=164α=0.01p^=xn=89164≅0.5427

Q: A recent report indicated that families in a certain country typically spend about $175 per week on…

A:

Q: A random sample of 54 students from a college are selected from a normal population with mu equal to…

A:

Q: Only 10% of registered voters voted in the last election. Will voter participation change for the…

A: Given that,possible chances (x)=28sample size(n)=313success rate ( p )= x/n = 0.0895success…

Q: Recently, a large academic medical center determined that 10 of 20 employees in a particular…

A: The random variable X follows binomial distribution. X ~ B (n, p). We have to use normal…

Q: A random sample of 159 recent donations at a certain blood bank reveals that 89 were type A blood.…

A: The provided information are: Sample size=n=159 Number of Favorable cases=x=89 p=0.40 significance…

Q: Suppose 26 of 200 tires of brand A failed to last 30000 miles, whereas the corresponding figure for…

A: Given:

Q: Only 20% of registered voters voted in the last election. Will voter participation decline for the…

A: b. The null and alternate hypotheses are as below: H0:p0=0.2H1:p0<0.2 c. Here  p^=58388=0.1495…

Q: In 1990, 58% of Americans 18 years old and older reported they have a great deal of concern…

A: Introduction: Here, the hypothesized proportion is given as 58% or p = 0.58. The researchers collect…

Q: A carnival game is designed so that approximately 10% of players will win a large prize. If there is…

A: Given  p=10% , n=100, x=19

Q: One survey showed that among 935 randomly selected subjects who completed four years of college, 140…

A: It is given that n=935 and x=140.

Q: Are freshmen psychology majors more likely to change their major before they graduate compared to…

A:

Q: A random sample of 161 recent donations at a certain blood bank reveals that 88 were type A blood.…

A:

Q: Is there a difference between men and women when it comes to seeking preventative healthcare? At the…

A: The random variable preventative care follows binomial distribution. There are two independent…

Q: State the null hypothesis H0 and the alternative hypothesis H1 Find the z-test value find the…

A: Sample proportion = 140/225 = 0.6222 n = 225

Q: In the nursing home study mentioned in the chapter-opening Statistics Today, the researchers found…

A: State the hypotheses.

Q: It has been claimed that over 30 percent of entering college students have blood cholesterol levels…

A: First, we obtain 20 random numbers between 1 and 57 using the function "RANDBETWEEN()" function in…

Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A: Proportion z_test: If the given sample size is more than 30 or Population standard deviation is…

Q: A study of the population of NUIG students showed that out of a sample of 155 students surveyed, 45…

A: Given that, sample size n= 155 And X= 45  Population proportion is given by, P= X/n = 45/155 P=…

Q: The drug Ritalin is designed to stimulate the central nervous system. In a random sample of 252 boys…

A: In order to test the claim that the population proportions of boys who take Ritalin aged 10 – 12 is…

Q: In a random sample of males, it was found that 24 write with their left hands and 225 do not. In a…

A:

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.