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On a ship sailing north, a woman notices that a hotel on a shore has a bearing of 20. A little while later, after having sailed 40km, she observes that the bearing of the hotel is now 100. How far is the ship from the hotel?

What is the zscore of a 97.5% one sided pvalue?

What does a zscore indicate?

1545 subjects were given ginko & 1524 placebo. In ginko group, 246 developed dementian & in the placebo it was 277 with dementia. Significance level=0.01 to test claim(ginko is effective in dementia) Can you test claim and construct confidence interval?

How do you use synthetic division to find: f(2): #f(x) = 3x^4  2x^2 + 1#?

How do you find the general solutions for #cos (x)^4sin (x)^4=2*cos (x)*cos(2x)#?

How do you find the sum of the infinite geometric series 8  10 + 12.5  15.625 + ...?

What hypothesis test do you use when the population variance is unknown?

How do you convert 202.5 degrees to radians?

What is the difference between a normal and binomial distribution?

How do you solve the triangle if it has legs with lengths of 18 and 28 and there is a 90 degree angle, X and Y are the other two angles?

How do you solve #ln(x)=x2#?

What are the extrema of #f(x)=sinxcosx# on the interval #[0,2pi]#?

What quadrant would (2, 6) be?

Question #f9702

Question #60d5b

How do you use partial fraction decomposition to decompose the fraction to integrate #(2x+1)/((x+1)^2(x^2+4)^2)#?

Question #54481

Question #23b0f

How does a linear regression differ from a multiple linear regression?

What is the expected value of a lottery ticket which pays $10 million if the ticket contains the six winning numbers chosen from the set {1,2,3,...,50}?

Question #26b22

Why can the median of a data set differ from the mean?

The angle of elevation is 19°20' from a ship at sea to the top of a 159 ft lighthouse. How do you find, to three significant digits, the distance of the ship from the base of the lighthouse?

How do you simplify #i^42#?

How do you determine whether a linear system has one solution, many solutions, or no solution when given 7x+4y=26 and 3x8y=18?

Question #0b699

What z score corresponds to a one sided pvalue of 93%?

Question #e85fa

Question #05ff8

If the equation of a conic section is #(x3)^2/49+(y4)^2/13=1#, how has its center been translated?

Question #0f302

How do you find the vertex and axis of symmetry, and then graph the parabola
given by: # f(x)=(x+2)^28#?

How do you solve #sqrt(x5)  sqrt(2x3) = 2#?

Is it possible for 75% of the data to be above the median?

How do you find the vertex and axis of symmetry, and then graph the parabola
given by: #f(x)=2x^26x5#?

Question #6f7ed

How do you find the critical points for # f(x)=x^36x^2+12x6#?

What is the difference between continuous and discrete data?

How do you graph #4x^2 + 4y^2 + 24x  32y + 51#?

How do you find the volume of the region enclosed by the curves #y=x#, #y=x#, and #x=1# rotated about the y axis?

Men ages(2029) have meanheight 69.3 with s.dev of 2.5 in. An analyst wonders if sd of majorleague players less than 2.5 in. Heights of 20 random players are:72, 74, 71, 72,76,70,77,75,72,72,77,73,75,70,73,74,75,73,74,73. Can you help me find the P value?

What is the mathematical difference between the probability density functions of a normal distribution and a standard normal distribution?

How do you find the end behavior of #f(x)= 4x  x^(2)#?

How do you use the shell method to set up and evaluate the integral that gives the volume of the solid generated by revolving the plane region #y=2x#, #2<=x<=4# rotated about the xaxis?

Question #8fed0

What is the formula for finding the length of an arc, using radians and degrees?

How do you find the formula of an exponential graph given (0, 2) and (2, 50)?

How do you use the method of cylindrical shells to find the volume generated by rotating the region bounded by #y=e^(−x^2)#, y=0, x=0, and x=1 about the y axis?

If you regress random variable Y against random variable X, would the results be the same if you regressed X against Y?

What is the difference between the RSquared and adjusted RSquared when running a regression analysis?

What are the critical values of #f(x)=4x^2+2x+1#?

In a Unit Circle what do the radian values mean?

Question #a72dd

How do you solve #2^(2x) + 2^(x + 2)  12 = 0#?

If you roll a die #100# times and get #15# ones, what is the probability that the die is not fair? What about if you get #5# ones?

Question #36631

How to simplify #(3.3 times 10^4)(3times10^18)# in scientific notation?

What zscore corresponds to a one sided pvalue of 10%?

Where should I draw the asymptotes of #(x+2)^2/4(y+1)^2/16=1#?

What is the formula for instantaneous velocity?

If X and Y are uncorrelated variables, what is Var(X+Y) in terms of Var(X) and Var(Y)?

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